Author Archives: Attention to the Unseen

Ants are cool but teach us nothing

E.O. Wilson writes: For nearly seven decades, starting in boyhood, I’ve studied hundreds of kinds of ants around the world, and this qualifies me, I believe, to offer some advice on ways their lives can be applied to ours. I’ll start with the question I’m most often asked: “What can I do about the ants in my kitchen?” My response comes from the heart: Watch your step, be careful of little lives. Ants especially like honey, tuna and cookie crumbs. So put down bits of those on the floor, and watch as the first scout finds the bait and reports back to her colony by laying an odor trail. Then, as a little column follows her out to the food, you will see social behavior so strange it might be on another planet. Think of kitchen ants not as pests or bugs, but as your personal guest superorganism.

Another question I hear a lot is, “What can we learn of moral value from the ants?” Here again I will answer definitively: nothing. Nothing at all can be learned from ants that our species should even consider imitating. For one thing, all working ants are female. Males are bred and appear in the nest only once a year, and then only briefly. They are pitiful creatures with wings, huge eyes, small brains and genitalia that make up a large portion of their rear body segment. They have only one function in life: to inseminate the virgin queens during the nuptial season. They are built to be robot flying sexual missiles. Upon mating or doing their best to mate, they are programmed to die within hours, usually as victims of predators.

Many kinds of ants eat their dead — and their injured, too. You may have seen ant workers retrieve nestmates that you have mangled or killed underfoot (accidentally, I hope), thinking it battlefield heroism. The purpose, alas, is more sinister. [Continue reading…]

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Will misogyny bring down the atheist movement?

Mark Oppenheimer writes: Several women told me that women new to the movement were often warned about the intentions of certain older men, especially [Michael] Shermer [the founder of Skeptic magazine]. Two more women agreed to go on the record, by name, with their Shermer stories… These stories help flesh out a man who, whatever his progressive views on science and reason, is decidedly less evolved when it comes to women.

Yet Shermer remains a leader in freethought — arguably the leader. And in his attitudes, he is hardly an exception. Hitchens, the best-selling author of God Is Not Great, who died in 2011, wrote a notorious Vanity Fair article called “Why Women Aren’t Funny.” Richard Dawkins, another author whose books have brought atheism to the masses, has alienated many women — and men — by belittling accusations of sexism in the movement; he seems to go out of his way to antagonize feminists generally, and just this past July 29 he tweeted, “Date rape is bad. Stranger rape at knifepoint is worse. If you think that’s an endorsement of date rape, go away and learn how to think.” And Penn Jillette, the talking half of the Penn and Teller duo, famously revels in using words like “cunt.”

The reality of sexism in freethought is not limited to a few famous leaders; it has implications throughout the small but quickly growing movement. Thanks to the internet, and to popular authors like Dawkins, Hitchens, and Sam Harris, atheism has greater visibility than at any time since the 18th-century Enlightenment. Yet it is now cannibalizing itself. For the past several years, Twitter, Facebook, Reddit, and online forums have become hostile places for women who identify as feminists or express concern about widely circulated tales of sexism in the movement. Some women say they are now harassed or mocked at conventions, and the online attacks — which include Jew-baiting, threats of anal rape, and other pleasantries — are so vicious that two activists I spoke with have been diagnosed with post-traumatic stress disorder. One of these women has been bedridden for two years.

To those outside the community, freethought would seem an unlikely candidate for this sort of internal strife. Aren’t atheists and agnostics supposed to be liberal, forward-thinking types? But from the beginning, there has been a division in freethought between the humanists, who see atheism as one part of a larger progressive vision for society, and the libertarians, for whom the banishment of God sits comfortably with capitalism, gun rights, and free-speech absolutism. One group sees men like Michael Shermer as freethought’s big problem, while the other sees defending them as crucial to freethought’s mission. [Continue reading…]

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How ancient DNA is rewriting human history

Michael White writes: There are no written records of the most important developments in our history: the transition from hunting and gathering to farming, the initial colonization of regions outside Africa, and, most crucially, the appearance of modern humans and the vanishing of archaic ones. Our primary information sources about these “pre-historic” events are ancient tools, weapons, bones, and, more recently, DNA. Like an ancient text that has picked up interpolations over the millennia, our genetic history can be difficult to recover from the DNA of people alive today. But with the invention of methods to read DNA taken from ancient bones, we now have access to much older copies of our genetic history, and it’s radically changing how we understand our deep past. What seemed like an episode of Lost turns out to be much more like Game of Thrones: instead of a story of small, isolated groups that colonized distant new territory, human history is a story of ancient populations that migrated and mixed all over the world.

There is no question that most human evolutionary history took place in Africa. But by one million years ago—long before modern humans evolved — archaic human species were already living throughout Asia and Europe. By 30,000 years ago, the archaic humans had vanished, and modern humans had taken their place. How did that happen?

From the results of early DNA studies in the late 1980s and early ’90s, scientists argued that anatomically modern humans evolved in Africa, and then expanded into Asia, Oceania, and Europe, beginning about 60,000 years ago. The idea was that modern humans colonized the rest of the world in a succession of small founding groups — each one a tiny sampling of the total modern human gene pool. These small, isolated groups settled new territory and replaced the archaic humans that lived there. As a result, humans in different parts of the world today have their own distinctive DNA signature, consisting of the genetic quirks of their ancestors who first settled the area, as well as the genetic adaptations to the local environment that evolved later.
There are very few isolated branches of the human family tree. People in nearly every part of the world are a product of many different ancient populations, and sometimes surprisingly close relationships span a wide geographical distance.

This view of human history, called the “serial founder effect model,” has big implications for our understanding of how we came to be who we are. Most importantly, under this model, genetic differences between geographically separated human populations reflect deep branchings in the human family tree, branches that go back tens of thousands of years. It also declares that people have evolutionary adaptations that are matched to their geographical area, such as lighter skin in Asians and Europeans or high altitude tolerance among Andeans and Tibetans. With a few exceptions, such as the genetic mixing after Europeans colonized the Americas, our geography reflects our deep ancestry.

Well, it’s time to scrap this picture of human history. [Continue reading…]

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The manufacturers of the world’s handpans don’t want to turn to mass production

Ilana E. Strauss writes: The handpan may look like a Stone Age relic, but it was actually invented about a decade ago by Swiss artists Felix Rohner and Sabina Schärer. The two were steelpan makers, and they came up with a new instrument, which they christened the “Hang” meaning “hand” in Bernese German.

Rohner and Schärer formed their company, PANArt, to sell their creations in 2000. Requests started pouring in, and soon they couldn’t meet demand. They received thousands of inquiries annually, but they only made a few hundred instruments each year.

The artists didn’t want to mass-produce their handpans, so they did something novel: They required prospective customers to write hand-written letters. A chosen few were then invited to the PANArt workshop in Switzerland (they had to furnish their own travel expenses), where they bought their instruments in person. While there, buyers learned about the history and use of the Hang, as well as how to care for it. [Continue reading…]

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Evolution’s random paths lead to one place

Quanta Magazine: In his fourth-floor lab at Harvard University, Michael Desai has created hundreds of identical worlds in order to watch evolution at work. Each of his meticulously controlled environments is home to a separate strain of baker’s yeast. Every 12 hours, Desai’s robot assistants pluck out the fastest-growing yeast in each world — selecting the fittest to live on — and discard the rest. Desai then monitors the strains as they evolve over the course of 500 generations. His experiment, which other scientists say is unprecedented in scale, seeks to gain insight into a question that has long bedeviled biologists: If we could start the world over again, would life evolve the same way?

Many biologists argue that it would not, that chance mutations early in the evolutionary journey of a species will profoundly influence its fate. “If you replay the tape of life, you might have one initial mutation that takes you in a totally different direction,” Desai said, paraphrasing an idea first put forth by the biologist Stephen Jay Gould in the 1980s.

Desai’s yeast cells call this belief into question. According to results published in Science in June, all of Desai’s yeast varieties arrived at roughly the same evolutionary endpoint (as measured by their ability to grow under specific lab conditions) regardless of which precise genetic path each strain took. It’s as if 100 New York City taxis agreed to take separate highways in a race to the Pacific Ocean, and 50 hours later they all converged at the Santa Monica pier.

The findings also suggest a disconnect between evolution at the genetic level and at the level of the whole organism. [Continue reading…]

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The bonding power of shared suffering

Pacific Standard: A new study from Australia suggests rituals such as arduous initiation rites serve a real purpose. It reports experiencing physical discomfort is an effective way for a group of strangers to cohere into a close-knit group.

“Shared pain may be an important trigger for group formation,” a research team led by psychologist Brock Bastian of the University of New South Wales writes in the journal Psychological Science. “Pain, it seems, has the capacity to act as social glue, building cooperation within novel social collectives.”
The researchers argue that pain promotes cooperation because of its “well-demonstrated capacity to capture attention and focus awareness.”

Bastian and his colleagues describe three experiments that provide evidence for this proposition, which was first proposed by such social theorists as Emile Durkheim. [Continue reading…]

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The thermodynamic theory of ecology

Quanta Magazine: The Western Ghats in India rise like a wall between the Arabian Sea and the heart of the subcontinent to the east. The 1,000-mile-long chain of coastal mountains is dense with lush rainforest and grasslands, and each year, clouds bearing monsoon rains blow in from the southwest and break against the mountains’ flanks, unloading water that helps make them hospitable to numerous spectacular and endangered species. The Western Ghats are one of the most biodiverse places on the planet. They were also the first testing ground of an unusual new theory in ecology that applies insights from physics to the study of the environment.

John Harte, a professor of ecology at the University of California, Berkeley, has a wry, wizened face and green eyes that light up when he describes his latest work. He has developed what he calls the maximum entropy (MaxEnt) theory of ecology, which may offer a solution to a long-standing problem in ecology: how to calculate the total number of species in an ecosystem, as well as other important numbers, based on extremely limited information — which is all that ecologists, no matter how many years they spend in the field, ever have. Five years ago, the Ghats convinced him that what he thought was possible from back-of-the-envelope calculations could work in the real world. He and his colleagues will soon publish the results of a study that estimates the number of insect and tree species living in a tropical forest in Panama. The paper will also suggest how MaxEnt could give species estimates in the Amazon, a swath of more than 2 million square miles of land that is notoriously difficult to survey.
John Harte thinks it is possible to predict the behavior of ecosystems using just a few key attributes. His method ignores nature’s small-grained complexities, which makes many ecologists skeptical of the project.

If the MaxEnt theory of ecology can give good estimates in a wide variety of scenarios, it could help answer the many questions that revolve around how species are spread across the landscape, such as how many would be lost if a forest were cleared, how to design wildlife preserves that keep species intact, or how many rarely seen species might be hiding in a given area. Perhaps more importantly, the theory hints at a unified way of thinking about ecology — as a system that can be described with just a few variables, with all the complexity of life built on top. [Continue reading…]

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