Archives for February 2018

A peek inside Brave New Arctic by Mark C. Serreze

In the 1990s, researchers in the Arctic noticed that floating summer sea ice had begun receding. This was accompanied by shifts in ocean circulation and unexpected changes in weather patterns throughout the world. The Arctic’s perennially frozen ground, known as permafrost, was warming, and treeless tundra was being overtaken by shrubs. What was going on? Brave New Arctic is Mark Serreze’s riveting firsthand account of how scientists from around the globe came together to find answers.

Brave New Arctic: The Untold Story of the Melting North, by Mark C. Serreze from Princeton University Press on Vimeo.

Mark C. Serreze is director of the National Snow and Ice Data Center, professor of geography, and a fellow of the Cooperative Institute for Research in Environmental Sciences at the University of Colorado at Boulder. He is the coauthor of The Arctic Climate System. He lives in Boulder, Colorado.

Exploring the Black Experience through the Arts

Black Americans’ work in the arts has long been both prominent and under-recognized. Black artists’ expressions of their experiences are some of the most iconic artifacts of American history. This Black History Month, we explore Black resistance through visual art, literature, and other art forms, and we highlight the central role of Black artists and Black art in American aesthetics and culture.

These books from PUP’s catalog focus on an iconic historical engraving, an award-winning immigrant writer, Black literature under surveillance, an important contemporary visual artist, and the poetry of loss, memory, and the natural world.

One of the most iconic images of slavery is a schematic wood engraving depicting the human cargo hold of a slave ship. First published by British abolitionists in 1788, it exposed this widespread commercial practice for what it really was–shocking, immoral, barbaric, unimaginable. Printed as handbills and broadsides, the image Cheryl Finley has termed the “slave ship icon” was easily reproduced, and by the end of the eighteenth century it was circulating by the tens of thousands around the Atlantic rim. Committed to Memory provides the first in-depth look at how this artifact of the fight against slavery became an enduring symbol of black resistance, identity, and remembrance.

Beautifully illustrated, Committed to Memory features works from around the world, taking readers from the United States and England to West Africa and the Caribbean. It shows how contemporary black artists and their allies have used this iconic eighteenth-century engraving to reflect on the trauma of slavery and come to terms with its legacy.

“Create dangerously, for people who read dangerously. This is what I’ve always thought it meant to be a writer. Writing, knowing in part that no matter how trivial your words may seem, someday, somewhere, someone may risk his or her life to read them.”—Create Dangerously

In this deeply personal book, the celebrated Haitian-American writer Edwidge Danticat reflects on art and exile, examining what it means to be an immigrant artist from a country in crisis. Inspired by Albert Camus’ lecture, “Create Dangerously,” and combining memoir and essay, Danticat tells the stories of artists, including herself, who create despite, or because of, the horrors that drove them from their homelands and that continue to haunt them. Danticat also suggests that the aftermaths of natural disasters in Haiti and the United States reveal that the countries are not as different as many Americans might like to believe.

Create Dangerously is an eloquent and moving expression of Danticat’s belief that immigrant artists are obliged to bear witness when their countries of origin are suffering from violence, oppression, poverty, and tragedy.

Brooklyn-born Jean-Michel Basquiat (1960-88) was one of the most important artists of the 1980s. A key figure in the New York art scene, he inventively explored the interplay between words and images throughout his career, first as a member of SAMO, a graffiti group active on the Lower East Side in the late 1970s, and then as a painter acclaimed for his unmistakable Neoexpressionist style. From 1980 to 1987, he filled numerous working notebooks with drawings and handwritten texts. This facsimile edition reproduces the pages of eight of these fascinating and rarely seen notebooks for the first time.

The Notebooks are filled with images and words that recur in Basquiat’s paintings and other works. Iconic drawings and pictograms of crowns, teepees, and hatch-marked hearts share space with handwritten texts, including notes, observations, and poems that often touch on culture, race, class, and life in New York. Like his other work, the notebooks vividly demonstrate Basquiat’s deep interests in comic, street, and pop art, hip-hop, politics, and the ephemera of urban life. They also provide an intimate look at the working process of one of the most creative forces in contemporary American art.

Few institutions seem more opposed than African American literature and J. Edgar Hoover’s white-bread Federal Bureau of Investigation. But behind the scenes the FBI’s hostility to black protest was energized by fear of and respect for black writing. Drawing on nearly 14,000 pages of newly released FBI files, F.B. Eyes exposes the Bureau’s intimate policing of five decades of African American poems, plays, essays, and novels. Starting in 1919, year one of Harlem’s renaissance and Hoover’s career at the Bureau, secretive FBI “ghostreaders” monitored the latest developments in African American letters. By the time of Hoover’s death in 1972, these ghostreaders knew enough to simulate a sinister black literature of their own. The official aim behind the Bureau’s close reading was to anticipate political unrest. Yet, as William J. Maxwell reveals, FBI surveillance came to influence the creation and public reception of African American literature in the heart of the twentieth century.

Illuminating both the serious harms of state surveillance and the ways in which imaginative writing can withstand and exploit it, F.B. Eyes is a groundbreaking account of a long-hidden dimension of African American literature.

In Radioactive Starlings, award-winning poet Myronn Hardy explores the divergences between the natural world and technology, asking what progress means when it destroys the places that sustain us. Primarily set in North Africa and the Middle East, but making frequent reference to the poet’s native United States, these poems reflect on loss, beauty, and dissent, as well as memory and the contemporary world’s relationship to the collective past.

A meditation on the complexities of transformation, cultures, and politics, Radioactive Starlings is an important collection from a highly accomplished young poet.


Michael J. Ryan: A Taste for the Beautiful

Darwin developed the theory of sexual selection to explain why the animal world abounds in stunning beauty, from the brilliant colors of butterflies and fishes to the songs of birds and frogs. He argued that animals have “a taste for the beautiful” that drives their potential mates to evolve features that make them more sexually attractive and reproductively successful. But if Darwin explained why sexual beauty evolved in animals, he struggled to understand how. In A Taste for the Beautiful, Michael Ryan, one of the world’s leading authorities on animal behavior, tells the remarkable story of how he and other scientists have taken up where Darwin left off and transformed our understanding of sexual selection, shedding new light on human behavior in the process. Vividly written and filled with fascinating stories, A Taste for the Beautiful will change how you think about beauty and attraction. Read on to learn more about the evolution of beauty, why the sight of a peacock’s tail made Darwin sick, and why males tend to be the more “beautiful” in the animal kingdom.

What made you interested in the evolution of beauty?

For my Masters degree I was studying how male bullfrog set up and defend territories. They have a pretty imposing call that has been described as ‘jug-a-rum;’ it is used to repel neighboring males and to attract females. In those days it was thought that animal sexual displays functioned only to identify the species of the signaler. For example, in the pond where I worked you could easily tell the difference between bullfrogs, leopard frogs, green frogs, and spring peepers by listening to their calls. Females do the same so they can end up mating with the correct species. Variation among the calls within a species was thought of to be just noise, random variation that had little meaning to the females.

But sitting in this swamp night after night I was able to tell individual bullfrogs apart from one another and got used to seeing the same males with the loudest deepest calls in the same parts of the pond. I began to wonder that if I could hear these differences could the female bullfrogs, and could females decide who to mate with based on the male’s call? And also, if some calls sounded more beautiful to me, did female frogs share with me the same aesthetic?

I never got to answer these questions with the bullfrogs but I decided to pursue this general question when I started at Cornell University to work on my PhD degree.

Why did Darwin say that the sight of the peacock’s tail, an iconic example of sexual beauty, made him sick?

Darwin suffered all kinds of physical maladies, some probably brought on by his contraction of Chagas disease during his voyage on the Beagle. But this malady induced by the peacock’s tail probably resulted from cognitive dissonance. He had formulated a theory, natural selection, in which he was able to explain how animals evolve adaptations for survival. Alfred Russel Wallace developed a very similar theory. All seemed right with the world, at least for a while.

But then Darwin pointed out that many animal traits seem to hinder rather than promote survival. These included bright plumage and complex song in birds, flashing of fireflies, male fishes with swords, and of course the peacock with its magnificently long tail. All of these traits presented challenges to his theory of natural selection and the general idea of survival of the fittest. These sexy traits are ubiquitous throughout the animal kingdom but seem to harm rather than promote survival.

Sexual selection is Darwin’s theory that predicts the evolution of sexual beauty. How is this different from Darwin’s theory of natural selection?

The big difference between these two theories is that one focuses on survivorship while the other focuses on mating success. Both are important for promoting evolution, the disproportionate passage of genes from one generation to the next. An animal that survives for a long period of time but never reproduces is in a sense genetically dead. Animals that are extremely attractive but do not live long enough to reproduce also are at a genetic dead-end. It is the proper mix of survivorship and attractiveness that is most favored by selection. But the important point to realize is that natural selection and sexual selection are often opposed to one another; natural selection for example, favoring shorter tails in peacocks and sexual selection favoring longer tails. What the bird ends up with is a compromise between these two opposing selection forces.

In most of evolutionary biology the emphasis is still more on survival than mating success. But sometimes I think that surviving is just nature’s clever trick to keep individuals around long enough so that they can reproduce.

Why is it that in many animals the males are the more beautiful sex?

In most animals there are many differences between males and females. But what is the defining character? What makes a male a male and a female a female? It is not the way they act, the way they look, the way they behave. It is not even defined by the individual’s sex organs, penis versus vagina in many types of animals.

The defining characteristic of the sexes is gamete size. Males have many small gametes and females have fewer large gametes.  The maximum number of offspring that an animal can sire will be limited by the number of gametes. Therefore, males could potentially father many more offspring than a female could mother.

But of course males need females to reproduce. So this sets up competition where the many gametes of the males are competing to hook up with the fewer gametes of the females. Thus in many species males are under selection to mate often, they will never run out of gametes, while females are under selection to mate carefully and make good use of the fewer gametes they have. Thus males are competing for females, either through direct combat or by making themselves attractive to females, and females decide which males get to mate. The latter is the topic of this book.

Why is sexual beauty so dangerous?

The first step in communication is being noticed, standing out against the background. This is true whether animals communicate with sound, vision, or smells. It is especially true for sexual communication. The bind that males face is they need to make themselves conspicuous to females but their communication channel is not private, it is open to exploitation by eavesdroppers. These eavesdroppers can make a quick meal out of a sexually advertising male. One famous example, described in this book, involves the túngara frog and its nemesis, the frog-eating bat. Male túngara frogs add syllables, chucks, to their calls to increase their attractiveness to females. But it also makes them more attractive to bats, so when these males become more attractive they also become more likely to become a meal rather than a mate.

The túngara frog is only one example of the survival cost of attractive traits. When crickets call, for example, they can attract a parasitic fly. The fly lands on the calling male and her larvae crawl off of her onto the calling cricket. The larvae then burrow deep inside the cricket where they will develop. As they develop they eat the male from the inside out, and their first meal is the male’s singing muscle. This mutes the male so he will not attract other flies who would deposit their larvae on the male who would then become competitors.

Another cost of being attractive is tied up with the immune system. Many of the elaborate sexual traits of males develop in response to high levels of testosterone. Testosterone can have a negative effect on the immune system. So as males experience higher testosterone levels that might produce more attractive ornaments, but these males are paying the cost with their ability to resist disease.

How did you come to discover that frog eating bats are attracted to the calls of túngara frogs?

The credit for this initial discovery goes to Merlin Tuttle. Merlin is a well-known bat biologist and he was on BCI the year before I was. He captured a bat with a frog in its mouth. Merlin wondered how common this behavior was and whether the bats could hear the calls of the frogs and use those calls to find the frogs.

When Stan Rand and I discovered that túngara frogs become more attractive when they add chucks to their calls, we wondered why they didn’t produce chucks all the time. We were both convinced that there were some cost of producing chucks and we both thought it was likely the ultimate cost imposed by a predator.

Merlin contacted Stan about collaborating on research with the frog-eating bat and frog calls, and Stan then introduced Merlin to me. The rest is history as this research has blossomed into a major research program for a number of people.

Is beauty really in the eye of the beholder?

Yes, but it is also in the ears, the noses, the toes and any other sense organ recruited to check out potential mates. All of these sense organs forward information to the brain where judgements about beauty are made. So it is more accurate to say beauty is in the brain of the beholder. It might be true that the brain is our most important sex organ, but the brain has other things on its mind besides sex. It evolves under selection to perform a number of functions, and adaptations in one function can lead to unintended consequences for another function. For example, studies of some fish show that the color sensitivity of the eyes evolves to facilitate the fish’s ability to find its prey. Once this happens though, males evolve courtship colors to which their females’ eyes are particularly sensitive. This is called sensory exploitation.

A corollary of ‘beauty is in the brain of the beholder’ is that choosers, usually females, define what is beautiful. Females are not under selection to find out which males are attractive, by determining which males are attractive. They are in the driver’s seat when it comes to the evolution of beauty.

What is sensory exploitation?

We have probably all envisioned the perfect sexual partner. And in many cases those visions do not exist in reality. In a sense, the same might be true in animals. Females can have preferences for traits that do not exist. Or at least do not yet exist. When males evolve traits that elicit these otherwise hidden preferences this is called sensory exploitation. We can think of the evolution of sexual beauty as evolutionary attempts to probe the ‘preference landscape’ of the female. When a trait matches one of these previously unexpressed preferences, the male trait is immediately favored by sexual selection because it increases his mating success.

A good example of this occurs in a fish called the swordtail. In these fishes males have sword-like appendages protruding from their tails. Female swordtails prefer males with swords to those without swords, and males with longer swords to males with shorter swords. Swordtails are related to platyfish, the sword of swordtails evolved after the platyfish and swordtails split off from one another thousands of years ago. But when researchers attach a plastic sword to a male platyfish he becomes more attractive to female platyfish. These females have never seen a sworded male but they have a preference for that trait nonetheless. Thus it appears that when the first male swordtail evolved a sword the females already had a preference for this trait.

Do the girls really get prettier at closing time, as Mickey Gilly once sang?

They sure do, and so do the boys. A study showed that both men and women in a bar perceive members of the opposite sex as more attractive as closing time approaches. This classic study was repeated in Australia where they measured blood alcohol levels and showed that the ‘closing time’ effect was not only due to drinking but to the closing time of the bar.

The interpretation is of these results is that if an individual wants to go home with a member of the opposite sex but none of the individuals meet her or his expectations of beauty, the individual has two choices. They can lower their standards of beauty or they can deceive themselves and perceive the same individuals as more attractive. They seem to do the latter.

Although we do not know what goes on in an animal’s head, they show a similar pattern of behavior. Guppies and roaches are much more permissive in accepting otherwise unattractive mates as they get closer to the ultimate closing time, the end of their lives. In a similar example, early in the night female túngara frogs will reject certain calls that are usually unattractive, but later in the night when females become desperate to find a mate they become more than willing to be attracted to these same calls.  It is also noteworthy that middle-aged women think about sex more and have sex more often than do younger women.

Deception seems to be widespread in human courtship. What about animals?

Males have a number of tricks to deceive females for the purpose of mating. One example involves moths in which males make clicking sounds to court females. When males string together these clicks in rapid succession it sounds like the ‘feeding buzz’ of a bat, the sound a bat makes as it zeros in on its prey. At least this is what the female moths think. When they hear these clicks they freeze and the male moth is then able to mount the female and mate with her with little resistance as she appears to be scared to death, not of the male moth but of what she thinks is a bat homing in on her for the kill.

Other animals imitate food to drive female’s attention. Male mites beat their legs on the water surface imitating vibrations caused by copepods, the main source of food for the water mites. When females approach the source of these were vibrations they find a potential mate rather than a potential meal.

What about peer pressure? We know this plays a role in human in interactions, and the influence our perceptions of beauty? What about animals, can they be subjected to peer pressure?

Suppose a woman looks at my picture and is told rate my attractiveness on the scale of 1 to 10. Another woman is asked to do the same but in this picture I am standing next to an attractive woman. Almost certainly I will get a higher score the second time; my attractiveness increases although nothing about my looks have changed, only that I was consorting with a good-looking person.  This is referred to as mate choice and it is widespread in the animal kingdom.

Mate choice copying was first experimentally demonstrated in guppies. Female guppies prefer males who have more orange over those who have less orange. In a classic experiment, females were given a choice between a more than a less colorful male. They preferred the more colorful male and then were returned to the center of the tank for another experiment. In this instance they saw the less colorful and less preferred male courting a female. That female was removed and the test female was tested for her preference for the same two males once again. Now the female changes her preference and prefers what previously had been the less preferred male. She too seems to be employing mate choice copying.

Many animals learn by observing others. Mate choice copying seems to be a type of observational learning that is common in many animals in many domains. It might suggest that we be careful with whom we hang out.

What is the link between sexual attraction in animals and pornography in humans?

Animal sexual beauty is often characterized by being extreme: long tails, complex songs, brilliant colors, and outrageous dances. The same is often true of sexual beauty in humans. Female supermodels, for example, tend to be much longer and thinner than most other women in the population, male supermodels are super-buff—hardly normal. Furthermore, in animals we can create sexual traits that are more extreme than what exists in males of the population, and in experiments females often prefer these artificially exaggerated traits, such as: even longer tales, more complex songs, and more brilliant colors than exhibited by their own males. These are called supernormal stimuli. Pornography also creates supernormal stimuli not only in showcasing individuals with extreme traits but also in creating social settings that hardly exist in most societies, this manufactured social setting is sometimes referred to as Pornotopia.

RyanMichael J. Ryan is the Clark Hubbs Regents Professor in Zoology at the University of Texas and a Senior Research Associate at the Smithsonian Tropical Research Institute in Panama. He is a leading researcher in the fields of sexual selection, mate choice, and animal communication. He lives in Austin, Texas.


Bird Fact Friday – Radios & the New Zealand Storm-petrel

Adapted from pages 18-19 of Far From Land:

Attaching transmitting VHF radios to animals has occupied biologists since the late 1950s. It is a powerful technique for relocating, say, a troop of chimpanzees that assuredly will not have travelled far since their last known position. It is less useful for seabirds which travel far greater distances, taking them beyond the line of sight of any scientist deploying a receiving aerial on some windy clifftop. Couple this problem with the fact that a seabird will often dip into the trough below the wave crests or, even worse, submerge underwater, and the upshot is that VHF radio-telemetry has not transformed seabird research.

Believed extinct for over a century, the New Zealand Storm-petrel (Fregetta maoriana) was re-discovered in 2003. Subsequently, radio-tracked birds led scientists to a colony near Auckland. Illustrated by Bruce Pearson.

Those disparaging words notwithstanding, radio-telemetry has had its moments. In 2003, the ornithological world was amazed when the New Zealand Storm-petrel, thought extinct for over a century, was re-discovered at sea off New Zealand’s North Island. That led immediately to the question of the whereabouts of its colonies, and the tricky task of discovering those colonies. The problem was solved when it proved possible to attract the birds close to a 3.5 m inflatable with chum, the ornithologists’ term for a smelly sludge of fish bits. Once in range, the storm-petrels were captured by a small net fired over them. Fitted with  a transmitter weighing two-thirds of a gram, the released birds then led the searchers in 2013 to nesting burrows in the rainforests of Little Barrier Island, a mere 50 km from Auckland, New Zealand’s largest city.

Far From Land
Michael Brooke
With illustrations by Bruce Pearson

Seabirds evoke the spirit of the earth’s wildest places. They spend large portions of their lives at sea, often far from land, and nest on beautiful and remote islands that humans rarely visit. Thanks to the development of increasingly sophisticated and miniaturized devices that can track their every movement and behavior, it is now possible to observe the mysterious lives of these remarkable creatures as never before. This beautifully illustrated book takes you on a breathtaking journey around the globe to reveal where these birds actually go when they roam the sea, the tactics they employ to traverse vast tracts of ocean, the strategies they use to evade threats, and more.

Michael Brooke has visited every corner of the world in his lifelong pursuit of seabirds. Here, he draws on his own experiences and insights as well as the latest cutting-edge science to shed light on the elusive seafaring lives of albatrosses, frigatebirds, cormorants, and other ocean wanderers. Where do puffins go in the winter? How deep do penguins dive? From how far away can an albatross spot a fishing vessel worth following for its next meal? Brooke addresses these and other questions in this delightful book. Along the way, he reveals that seabirds are not the aimless wind-tossed creatures they may appear to be and explains the observational innovations that are driving this exciting area of research.

Featuring illustrations by renowned artist Bruce Pearson and packed with intriguing facts, Far from Land provides an extraordinary up-close look at the activities of seabirds.

Leah Boustan: What hundreds of thousands of census records can teach us about the Great Black Migration

In honor of Black History Month, we’re running a special blog series entitled, “Exploring the Black Experience.” Learn more about the Great Black Migration with this post by Leah Boustan, author of Competition in the Promised Land

BoustanIn 1920, Kernell and Royal Pleasant, two brothers aged 13 and 11, lived with their parents and younger sister Jennie in Assumption Parish, the heart of Louisiana’s sugarcane region, 80 miles west of New Orleans. The boys’ father, Thomas Pleasant, was a carpenter who reported working “by the job.” Even this middling profession placed Thomas one rung above their neighbors, most of whom were farm laborers in the sugarcane fields.

By 1940, Kernell and Royal’s lives had diverged. Kernell, the eldest brother, still lived in the same ward where he had been as a boy, following his father’s footsteps into carpentry and earning only $200 a year. Royal, although younger by two years, had moved up to Chicago, joining the millions of other southern black men and women who moved to northern cities during the twentieth century. By 1940, Royal was a college graduate and worked as a filing clerk in a municipal government office. He earned more than twice as much as his older brother, reporting $480 of annual earnings.

Although separated by region, educational status, and earnings, one feature drew the Pleasant brothers together: both Royal and Kernell lived in all-black neighborhoods in 1940. Back in Louisiana, Kernell’s closest neighbors were all still laborers in sugarcane fields. Up in Chicago, Royal, his wife Louise, and their lodger William lived down the street from railroad porters, barbers, and laborers at the stockyards. Most of their neighbors were fellow migrants, hailing from Mississippi, Alabama, Georgia, and Tennessee.

Royal Pleasant was only one of the four million black southerners who moved North from 1940 to 1970. The Census rolls that document the Pleasant brothers’ lives offer one small glimpse into this mass movement. As it turns out, Royal’s success in the North was a highly typical migrant story.

Using newly-digitized Census records, I was able to trace nearly 250,000 black men who were living in their childhood households in 1920 to their adult location in the 1940 Census. Many of these records contained sets of brothers, one or more of whom had moved to the North. Just as Royal was earning more than double his brother’s pay, I found that the average black man who moved North or West during this early wave of the Great Black Migration earned more than twice as much as his brother(s) who remained in the South.

The bar chart shows earnings estimates of the economic return to moving to the North for both black and white migrants. The blue bars compare earnings between migrants and non-migrants in the full population, and the green bars depict the results of a similar analysis for sets of matched brothers. In both cases, I find that black migrants earned twice as much as their southern counterparts, and white migrants earning around 50 percent more (the bars are presented in log terms; 80 log points is the equivalent of around 130 percent higher earnings). Half of the nominal return to migration can be attributed to higher cost of living in northern cities, but the other half represents a real increase in purchasing power.

The goal of examining brother pairs, rather than simply comparing all migrants to all men who remained in the South, is to account for potential selection in who chooses to move. If migrants were drawn from well-off households, a portion of the estimated return to migration would reflect this positive selection. If, instead, men from poorer households were more likely to move to the North, the estimated return to migration might be too low. The similarity of the estimates suggests that southern migrants were not especially selected, either positively or negatively, a pattern that is consistent with a large mass migration.

The 1940 Census was the first to include questions about individual income levels; earlier censuses only asked about occupation. As it turns out, most of the return to migrating to the North was driven by shifts from lower-paid rural occupations into higher-paid industrial or white collar positions. It was rare for migrants to remain in the same line of work as their brothers in the South. (There are always a few exceptions; the Allison brothers, David and Winston, both worked as waiters in restaurants, but David made twice as much in Chicago as Winston did in Birmingham, Alabama).

My ability to compare men who participated in the Great Black Migration to their brothers who stayed home is only possible because of large-scale digitization projects of the historical Census records. The manuscripts were transcribed by more than 25,000 volunteers organized by FamilySearch, the genealogical arm the Church of Jesus Christ of Latter-day Saints.  Data files were then made available to researchers through a partnership between and the Minnesota Population Center. The digitized 1940 Census files include 134 million persons and 70 variables.

From the 1940 Census, we can see only one snapshot of how Royal fared in his new life in Chicago and how Kernell managed back home. As new Census waves are released to the public (72 years after the surveys were taken), we will be able to follow these men and their many counterparts forward in time. Did Kernell ever join his brother in the North? Did Royal return to Louisiana, or one of the South’s burgeoning metropolitan areas, when it became time to retire? And how did the lives of their children (if any, as neither brother yet had children in the 1940 Census) unfold in their disparate settings?

On the last question, a new paper (link here) by Trent Alexander and co-authors uses restricted-access data from the Census Bureau to follow young children living in migrant and non-migrant families in 1940 to their adult outcomes in the 2000 Census. The children of migrants enjoy modest income gains even 60 or more years after their parents first moved to the North. Just as the parental generation was able to double their income by moving North, their children continue to enjoy a 10 percent earnings boost. The Great Black Migration is not only an essential chapter in black history but is still a vital part of black economic fortunes today.

Leah Platt Boustan is professor of economics at Princeton University, and a research associate at the National Bureau of Economic Research. She is the author of Competition in the Promised Land: Black Migrants in Northern Cities and Labor Markets.


Ten Ways to Think Like an Anthropologist

This month, PUP is publishing Matthew Engelke’s How to Think Like an Anthropologist, a popular introduction to an oft-misunderstood field. Providing ethnographic and theoretical examples from around the world and throughout the discipline’s history, Engelke shows readers how anthropology can help us understand ourselves and the world around us.

Are you ready to start thinking like an anthropologist? Follow these 10 tips to gain a deeper understanding of how different groups of humans organize their lives and articulate their values!

1. Do your research! Anthropologists conduct ethnographic research using the technique of participant observation. This could mean traveling halfway around the world to live in a tent, learn a new language, and eat unfamiliar foods. Or it could mean working alongside employees in a factory or office in your hometown. No matter where your field site is, make sure you ask questions of those around you, and take notes on how they see the world!

2. Adopt the sensibility of cultural relativism. This doesn’t mean you can’t have your own values, that you have to agree with everything you see in the field, or that you can’t trust hard data. Using cultural relativism as an approach does mean remembering that other groups may have very different ideas of the world than you do. Don’t assume that your perspective is universal.

3. Keep some critical distance – even if you belong to the group of people you’re studying! Anthropologists need some critical distance in order to perform analysis. Losing this distance can also present ethical dilemmas.

4. Interest yourself in the everyday. How do people greet each other? How do they keep their spaces clean? What material objects do they interact with? These questions may seem mundane, but studying them can help you understand a group’s values.

5. Work inductively – build from the specific to the general. Instead of setting out to prove a general idea about the group you’re studying, let your observations guide you to any broad conclusions. Present in your work a balance of general claims and specific observations.

6. Avoid falling into the “denial of coevalness” – the idea that certain groups of people are stuck in the past. Everyone in the world right now is living in the twenty-first century, and what it means to live in the twenty-first century looks different for different groups of people.

7. Remember that social and cultural change are not teleological. Every group’s way of life changes over time, but it’s important to consider these changes on their own terms, rather than as stepping stones toward some inevitable end goal.

8. Don’t feel you have to hide your political commitments or shy away from offering moral conclusions. To varying degrees, anthropologists’ work is often tied up with their own moral or political ideologies. Acknowledge this rather than deny it.

9. Be wary of your own authority as an ethnographer. Don’t just figure out how the people you’re studying think – think like the people you’re studying. Look beyond your own framing of their perspective.

10. Foreground what is usually in the background, and vice versa. As Engelke puts it, “Upend common sense and question what gets taken for granted…. Reconsider not only what we think we know… but also the terms by which we know it.” Open yourself to the “strangeness and surprise” you will undoubtedly encounter as you begin to think like an anthropologist.

Insect of the Week: Periodical Cicadas

Adapted from page 406-407 of Garden Insects of North America:

Periodical cicadas can typically be found in a wide variety of deciduous trees and shrubs through much of the northeastern quadrant of the U.S. They cause injuries to their plant hosts when females lay a series of small batches of eggs, inserting them into twigs. Small branches can be girdled and killed shortly after egg insertion. The damage also predisposes the branches to breakage and allows entry of pathogens. Surviving branches can display wounds for years. Adults feed on fluids extracted from twigs, and the nymphs similarly feed on roots, but these feeding injuries are considered minor.

Periodical cicadas have unique life cycles that involve synchronized adult emergence at consistent intervals (17 years for northern broods, 13 years for southern broods). Emergence of the various periodical cicadas is staggered at the various places where they occur, which are referred to as “broods.” Emergence events can be spectacular— and noisy—often attracting considerable attention and sometimes concern. Because of their large numbers during such events, early European settlers likened then to Biblical locusts; as a result they are sometimes still incorrectly referred to as “17-year locusts.” (The term locust is properly applied to certain grasshoppers that may periodically mass and migrate).

A periodical cicada ovipositing in a twig. Photo credit: David Shetlar

Adults are 1.25 to 1.75 inches, generally dark, and may have some banding. Their eyes are conspicuously red, and the wings are nearly transparent with orange veins. Immature stages live on the roots of trees and shrubs, growing slowly. In the seventeenth year of their life they emerge from the soil, typically in late May and early June in the north, earlier in the south. They climb trees, buildings, and other upright surfaces. The nymphal skin is then shed, and adults shortly thereafter move to the trees.

Head to our Instagram to see the damage that periodical cicadas can do to twigs.

Garden Insects of North America: The Ultimate Guide to Backyard Bugs
Second Edition
By Whitney Cranshaw & David Shetlar

This second edition of Garden Insects of North America solidifies its place as the most comprehensive guide to the common insects, mites, and other “bugs” found in the backyards and gardens of the United States and Canada. Featuring 3,300 full-color photos and concise, detailed text, this fully revised book covers the hundreds of species of insects and mites associated with fruits and vegetables, shade trees and shrubs, flowers and ornamental plants, and turfgrass—from aphids and bumble bees to leafhoppers and mealybugs to woollybears and yellowjacket wasps—and much more. This new edition also provides a greatly expanded treatment of common pollinators and flower visitors, the natural enemies of garden pests, and the earthworms, insects, and other arthropods that help with decomposing plant matter in the garden.

Designed to help you easily identify what you find in the garden, the book is organized by where insects are most likely to be seen—on leaves, shoots, flowers, roots, or soil. Photos are included throughout the book, next to detailed descriptions of the insects and their associated plants.

An indispensable guide to the natural microcosm in our backyards, Garden Insects of North America continues to be the definitive resource for amateur gardeners, insect lovers, and professional entomologists.

  • Revised and expanded edition covers most of the insects, mites, and other “bugs” one may find in yards or gardens in the United States and Canada—all in one handy volume
  • Features more than 3,300 full-color photos, more than twice the illustrations of the first edition
  • Concise, informative text organized to help you easily identify insects and the plant injuries that they may cause

Scott Cowen on Winnebagos on Wednesdays

CowenIn Winnebagos on Wednesdays: How Visionary Leadership Can Transform Higher Education, Scott Cowen, president emeritus of Tulane University, acknowledges the crisis in higher education but also presents reasons for optimism as courageous leaders find innovative strategies to solve the thorny problems they face. Telling stories of failure and triumph drawn from institutions all across the nation, Cowen takes the reader on a fascinating trip through varied terrain. Recently, Cowen answered some questions about his book and what he sees as a burgeoning opportunity to reshape higher education for the future.

What’s up with the title? I’m intrigued.

The title emanated from something that happened in the spring of my first year as president of Tulane, after an undefeated season for our football team. I made the coach an offer he couldn’t refuse—and he refused. He said he was leaving for Clemson, where the program was so spectacular that fans lined up their Winnebagos on Wednesdays in anticipation of Saturday games. That’s when I realized Tulane was, for various crazy reasons, in the entertainment business, and we weren’t on the A list. For me, the anecdote became a metaphor for all the absurdities and challenges confronting higher education, and started me thinking about how to stop the madness and tackle our problems.

Why did you write the book?

We’re obviously at a tipping point in higher education, with rising skepticism about its value and escalating demands for accountability, affordability, and access. It’s a moment to take stock, and I finally had time to do just that—reflect on my entire career and the lessons I’d learned. A key moment for me was Hurricane Katrina, when the survival of Tulane hung in the balance. I saw then that the two critical elements required to sustain and invigorate an institution are an inspired, distinctive mission and leaders who have the guts and determination to convert that mission into meaningful results. In the book, I tell stories about crisis points when leadership counted most: I parse some of the failures but also show innovative approaches that are being implemented right now, and that point the way to creative, practicable solutions. My aim was to get people to rethink the issues that plague all our schools—value and impact, diversity, financial sustainability, athletics, medicine, mission, governance, leadership—in order to improve our institutions and forge a path into the future.

What are some of the most important challenges facing higher education?

The list above itemizes many of them, but financial sustainability in particular cuts across all the issues. Right now, the cost of a college education is out of reach for too many, fueling perceptions of elitism and raising questions about value. In the book I describe the many efforts underway to cut costs, expand enrollments, develop innovative no-loan policies, and create new programs that enhance the “real world” value of a degree. But the ultimate challenge facing the sector is not the solving of any single conundrum. The fundamental task before us is to find the right people, the right governance, and the right mission if higher education is going to continue to be an engine of innovation and progress. A friend of mine from my days in business management used to say, “Success is all about the ‘who.’”  And that’s the bottom line: people make the organization. They establish the structures, define the mission, set the tone, and create the ethos that helps an institution thrive.

What is the most surprising news in the book?

The news comes from schools people don’t know much about. Looking at the usual suspects—the Harvards, Yales, and Stanfords—you won’t see large scale institutional transformation occurring; the more famous and successful an institution is, the more likely it is to stick with the tried-and-true—and, ironically, the more likely it is to be sowing the seeds of its own decline. The most promising changes are occurring at lesser-known schools, where innovations have dramatically heightened impact. For example, Xavier University, a small Catholic historically black school in New Orleans, led for decades by Norman Francis, has become the major pipeline for black doctors, scientists, and pharmacists in the U.S. Paul Quinn, a historically black college in Dallas led by Michael Sorrell, has reinvented itself as a hub of urban entrepreneurship while expanding its outreach to Latino students. Arizona State University, with Michael Crow at the helm, has increased its student body by 50% to 83,000, expanded African-American and Hispanic enrollment, consolidated departments into institutes with shared administrative costs, launched innovative online programs, and forged partnerships with other universities and private businesses. The University of Southern California, under Steve Sample’s leadership, has become a first-rate academic institution and an anchor for south central Los Angeles, with well-funded institutes, a dramatic increase in productive research, and a menu of cutting-edge interdisciplinary studies. Northeastern University, with its century-old co-op program—academic credits for experiential learning in a range of paid internships—has finally caught up with the current zeitgeist, becoming a magnet for students seeking preparation for the job market. All these schools, and many others, demonstrate that regional presence, pedagogic innovation, and a strong sense of mission create value and enhance impact.

How are the leaders we need tomorrow different from those of the past?

The scholar-president—typically a white male in his sixties—may fast be becoming a relic. Given current cultural shifts and upheavals, it’s clear that we need leaders who are more diverse on every measure—race, gender, geography, ideology, experience— reflecting the nation at large, and with the potential to be models and mentors on their campuses. In addition to personal histories, we should also be looking for traits like versatility and adaptability. In the coming era, university presidents will need to be agents of change, crafting new directions that keep pace with unfolding events; skillful executives who can steer complex multibillion-dollar organizations; astute assessors of talent; and inventors of creative solutions to the problems they will inevitably face. We are likely to see more “unfiltered” leaders, without the standard scholarly résumé, who promise to bring fresh perspectives drawn from the worlds of business, government, and the military, and more “blended” leaders, with one foot in the ivory tower and one in the outside world, who should be able to bring the two domains together in fruitful ways. But the sine qua non of an effective president is the quality of emotional intelligence: the ability to listen and empathize is an indispensable skill in the fractious times we live in. At this precarious moment, when we are facing a paradigm shift in priorities and possibilities, we need people at the helm who will preserve what is best from the past, invent novel approaches for the future, and embody the enduring values of civility, compassion, and integrity.

Scott Cowen is president emeritus and distinguished university chair of Tulane University. His books include The Inevitable City (St. Martin’s) and Innovation in Professional Education (Jossey-Bass). Cowen has written for such publications as the New York Times and the Wall Street Journal.

Exploring the Black Experience through Economics

For hundreds of years, the American and global economies have been built on the backs of Black people. In each era, new forms of marginalization—enslavement, segregation, exclusion—have been devised to limit Black economic success. Still, Black dreams and Black resilience have created space for Black people’s hard-won economic gains. As workers, scholars, migrants, and emissaries of empire, Black people have shaped the American and global economies in crucial ways.

From industrial migration to economic colonization, and from unfunded neighborhoods to elite business schools, these four books from PUP’s catalog highlight different aspects of Black Americans’ experiences at the center, the margins, and the cutting edge of the formal economy.

From 1940 to 1970, nearly four million black migrants left the American rural South to settle in the industrial cities of the North and West. Competition in the Promised Land provides a comprehensive account of the long-lasting effects of the influx of black workers on labor markets and urban space in receiving areas.

Employing historical census data and state-of-the-art econometric methods, Competition in the Promised Land revises our understanding of the Great Black Migration and its role in the transformation of American society.

In 1901, the Tuskegee Institute, founded by Booker T. Washington, sent an expedition to the German colony of Togo in West Africa, with the purpose of transforming the region into a cotton economy similar to that of the post-Reconstruction American South. Alabama in Africa explores the politics of labor, sexuality, and race behind this endeavor, and the economic, political, and intellectual links connecting Germany, Africa, and the southern United States. The cross-fertilization of histories and practices led to the emergence of a global South, reproduced social inequities on both sides of the Atlantic, and pushed the American South and the German Empire to the forefront of modern colonialism.

Tracking the intertwined histories of Europe, Africa, and the Americas at the turn of the century, Alabama in Africa shows how the politics and economics of the segregated American South significantly reshaped other areas of the world.

Baltimore was once a vibrant manufacturing town, but today, with factory closings and steady job loss since the 1970s, it is home to some of the most impoverished neighborhoods in America. The Hero’s Fight provides an intimate look at the effects of deindustrialization on the lives of Baltimore’s urban poor, and sheds critical light on the unintended consequences of welfare policy on our most vulnerable communities.

Blending compelling portraits with in-depth scholarly analysis, The Hero’s Fight explores how the welfare state contributes to the perpetuation of urban poverty in America.

For nearly three decades, English has been the lingua franca of cross-border organizations, yet studies on corporate language strategies and their importance for globalization have been scarce. In The Language of Global Success, Tsedal Neeley provides an in-depth look at a single organization—the high-tech giant Rakuten—in the five years following its English lingua franca mandate. Neeley’s behind-the-scenes account explores how language shapes the ways in which employees who work in global organizations communicate and negotiate linguistic and cultural differences.

Examining the strategic use of language by one international corporation, The Language of Global Success uncovers how all organizations might integrate language effectively to tap into the promise of globalization.

Blue: Ten Surprising Facts about the Color Blue

We all know the sky is blue, the ocean is blue, and the flag is (red, white, and) blue. Some of us have blue eyes, or blue blood, or are in a blue mood. And chances are you’re wearing something blue today. But how much do you know about the history of the color blue?

In Blue: The History of a Color, historian and symbologist Michel Pastoureau takes readers through the different meanings and uses of blue throughout Western history. Pastoureau’s fascinating anecdotes and lavish illustrations remind us that “color is first and foremost a social phenomenon.”

Originally published in 2000 as the first title in Pastoureau’s acclaimed series on the histories of colors, Blue is now back in print.

Here are ten surprising facts about blue:

1. In ancient Rome, blue was associated with barbarians. Wearing blue was looked down on as a sign of eccentricity or mourning, and blue eyes were considered a sign of bad character or a physical deformity.

2. The uses and meanings of blue in Europe shifted sharply when it became the color of Mary’s cloak during the development of the cult of the Virgin in the twelfth century. From depictions of Mary, blue spread to other religious imagery.

3. Because of the low usage of blue in ancient Greek and Rome, researchers in the 1800s wondered if the ancient Greeks and Romans could even see the color blue. (They could.)

4. In the twelfth and thirteenth centuries, merchants of woad (a blue plant-based dye) and madder (a red plant-based dye) competed fiercely and even violently to discredit each other’s colors.

5. During the Reformation, blue was classed with white, black, gray and brown as an “honest” color.

6. Blue was the symbolic color of the French Revolution, but France had trouble maintaining a large enough supply of indigo dye to keep its military dressed in blue. In 1829, infantrymen were ordered to wear red pants instead. They switched back to blue, however, in 1915, after the visibility of their bright red pants led to mass casualties in the first year of the Great War.

7. Goethe’s 1774 novel The Sorrows of Young Werther popularized blue coats for young men. The character Werther wears a “simple blue dress coat” with a yellow vest and trousers. Goethe saw blue and yellow as symbolic opposites, with blue being positive (active, warm, and bright) color and yellow being negative (passive, weak, and cold).

8. Between 1910 and 1950, black uniforms and clothing gave way to navy blue in one of the most important fashion events of the century.

9. Levi Strauss denim jeans were the first garments to have the brand name displayed on the outside. This was done to distinguish them from competing blue jeans brands Lee and Blue Bell (now Wrangler).

10. More than half of American adults today say blue is their favorite color. Pastoreau suggests that this statistic be taken with a grain of salt, even as he cites it as evidence of just how far blue has come since antiquity.


Browse our 2018 Computer Science & Information Science Catalog

Our new Computer Science & Information Science catalog includes an accessible and rigorous textbook for introducing undergraduates to computer science theory, a fascinating account of the breakthrough ideas that transformed probability and statistics, and an amazing tour of many of history’s greatest unsolved ciphers.

If you’re attending the ITA Workshop-Information Theory and Its Application conference this week, please stop by our table to browse our full range of titles.

What Can Be Computed? is a uniquely accessible yet rigorous introduction to the most profound ideas at the heart of computer science. Crafted specifically for undergraduates who are studying the subject for the first time, and requiring minimal prerequisites, the book focuses on the essential fundamentals of computer science theory and features a practical approach that uses real computer programs (Python and Java) and encourages active experimentation. It is also ideal for self-study and reference.

Throughout, the book recasts traditional computer science concepts by considering how computer programs are used to solve real problems. Standard theorems are stated and proven with full mathematical rigor, but motivation and understanding are enhanced by considering concrete implementations. The book’s examples and other content allow readers to view demonstrations of–and to experiment with—a wide selection of the topics it covers. The result is an ideal text for an introduction to the theory of computation.

In the sixteenth and seventeenth centuries, gamblers and mathematicians transformed the idea of chance from a mystery into the discipline of probability, setting the stage for a series of breakthroughs that enabled or transformed innumerable fields, from gambling, mathematics, statistics, economics, and finance to physics and computer science. This book tells the story of ten great ideas about chance and the thinkers who developed them, tracing the philosophical implications of these ideas as well as their mathematical impact.

Complete with a brief probability refresher, Ten Great Ideas about Chance is certain to be a hit with anyone who wants to understand the secrets of probability and how they were discovered.

Unsolved! begins by explaining the basics of cryptology, and then explores the history behind an array of unsolved ciphers. It looks at ancient ciphers, ciphers created by artists and composers, ciphers left by killers and victims, Cold War ciphers, and many others. Some are infamous, like the ciphers in the Zodiac letters, while others were created purely as intellectual challenges by figures such as Nobel Prize–winning physicist Richard P. Feynman. Bauer lays out the evidence surrounding each cipher, describes the efforts of geniuses and eccentrics—in some cases both—to decipher it, and invites readers to try their hand at puzzles that have stymied so many others.

Bird Fact Friday – Red-necked Phalaropes

Adapted from pages 60-62 of Far From Land:

Red-necked Phalaropes are charming small waders that spend the summer on northern tarns where, in a reversal of typical roles, the brighter females court a drabber male, lay a clutch, and then devolve all incubating duties onto him. Come winter and the phalaropes qualify as seabirds, spending their days in small flocks picking titbits from the surface. It had always been assumed that the small number of British phalaropes joined greater numbers of their kind from northern Russia to spend the winter in the seas south of Arabia, a known stronghold. By 2012, geolocators had become small enough to be attached safely to phalaropes, of which ten were duly tagged on the Shetland island of Fetlar. One was spotted back on Fetlar the following summer.

Birdwatchers were amazed when it was discovered that a tracked Red-necked Phalarope, breeding in the Shetland Isles, had spent the winter in the equatorial Pacific. Illustration by Bruce Pearson.

Malcie Smith, the Royal Society for the Protection of Birds’ Fetlar warden takes up the story. “We knew through experience that using a walk-in trap was almost always successful with incubating male phalaropes, so I was confident of success and, sure enough, we got our hands on his tag the following morning. We had a well-deserved dram of Scotland’s finest that night!

“There was a bit of a problem with having the data interpreted, with colleagues from the RSPB and the Swiss Ornithological Institute becoming involved in making sense of what was pretty messy data. I remember reading emails that included phrases like ‘impossible to interpret’ which was not encouraging. I was eventually given the ‘cleaned up’ details by email which nearly knocked me off my seat.”

The cause of Smith’s unseating was a track that took the bird west across the Atlantic from Shetland to Newfoundland. It then meandered along the eastern seaboard of North America, until crossing central America in mid-September. The next six winter months were spent in the eastern Pacific close to the Equator between continental Ecuador and the Galápagos Islands. Returning to Fetlar in spring, the phalarope more or less recapitulated its southbound route.

Since that study, further work has confirmed that phalaropes from Iceland and Greenland also winter in the Pacific while their fellow phalaropes breeding in northern Scandinavia do head to the Arabian Sea. Without question, this migratory split in the north-east Atlantic was wholly unanticipated.

Far From Land
Michael Brooke
With illustrations by Bruce Pearson

Seabirds evoke the spirit of the earth’s wildest places. They spend large portions of their lives at sea, often far from land, and nest on beautiful and remote islands that humans rarely visit. Thanks to the development of increasingly sophisticated and miniaturized devices that can track their every movement and behavior, it is now possible to observe the mysterious lives of these remarkable creatures as never before. This beautifully illustrated book takes you on a breathtaking journey around the globe to reveal where these birds actually go when they roam the sea, the tactics they employ to traverse vast tracts of ocean, the strategies they use to evade threats, and more.

Michael Brooke has visited every corner of the world in his lifelong pursuit of seabirds. Here, he draws on his own experiences and insights as well as the latest cutting-edge science to shed light on the elusive seafaring lives of albatrosses, frigatebirds, cormorants, and other ocean wanderers. Where do puffins go in the winter? How deep do penguins dive? From how far away can an albatross spot a fishing vessel worth following for its next meal? Brooke addresses these and other questions in this delightful book. Along the way, he reveals that seabirds are not the aimless wind-tossed creatures they may appear to be and explains the observational innovations that are driving this exciting area of research.

Featuring illustrations by renowned artist Bruce Pearson and packed with intriguing facts, Far from Land provides an extraordinary up-close look at the activities of seabirds.