john hawks weblog

paleoanthropology, genetics and evolution

history of science

  • Steno: not just for stratigraphy

    Sun, 2012-01-15 13:19 -- John Hawks

    Matthew Cobb, guest-blogging at Why Evolution Is True, gives an appreciation of Nicholas Steno's contributions to biology: "Google’s doodle: women have eggs".

    ‘The testicles of women are analogous to the ovary’: in other words, women have eggs. This amazing statement – almost a throwaway comment in a brief section on sharks – was the start of our modern understanding of both human reproduction, and on the essential unity of the animal kingdom.

    Cobb is the author of Generation: The Seventeenth-Century Scientists Who Unraveled the Secrets of Sex, Life, and Growth, which goes through this interesting chapter in the history of science, with names like Steno, Swammerdam, Leeuwenhoek all interconnected with each other.

  • Annals of self-experimentation

    Sun, 2011-11-13 11:49 -- John Hawks

    Mental Floss: "11 Scientists Who Experimented on Themselves".

    Werner Forssmann: In 1929 in the basement of the Eberswaled Hospital in Germany, surgical resident Werner Forssmann inserted a ureteral catheter tube into his elbow, feeding it through a vein up to his heart. He used a mirror as his assistant, since he had restrained his nurse to the operating table. He then took an x-ray of his chest (at left) to determine the catheter had indeed made it to the right atrium. Instead of praise, Forssmann was met with condemnation. This rejection led him to abandon cardiology for urology, but he was later rewarded with the Nobel Prize in 1956.

    Stubbins Ffirth is number 11. Whoa.

  • Turing and the apple

    Fri, 2011-11-11 18:18 -- John Hawks

    Folklorist Alan Garner has a poignant, short remembrance of Alan Turing:

    We had one thing in common: a fascination with Disney's Snow White and the Seven Dwarfs, especially the transformation of the Wicked Queen into the Witch. He used to go over the scene in detail, dwelling on the ambiguity of the apple, red on one side, green on the other, one of which gave death.

  • Gleick interview on information

    Sat, 2011-04-09 23:16 -- John Hawks

    The Guardian has an interview with James Gleick about his new book, The Information: A History, a Theory, a Flood. The book focuses in part on Claude Shannon and his development of information theory, which leads to one of the most interesting passages in the interview:

    But as you note, information is not knowledge. We are more painfully aware of that now than ever. In explaining Shannon's work I kept having to emphasise his point about the irrelevance of meaning; yet we know full well that meaning is what we really care about. This loomed larger and larger. There's a hilarious moment in 1950 in a New York hotel meeting room when Shannon tries to explain "information" to anthropologists and psychologists such as Margaret Mead and Lawrence Frank, and they're a little outraged. Where are the humans in this picture? Where are our brains? If it's just wires and transistors, who cares?

    Oh, if I were a companion of the Doctor, this is the second place I'd like to see.

  • An Arab view on the history of Darwinism

    Wed, 2010-03-10 09:09 -- John Hawks

    Eric Michael Johnson gives an account of the history of science work of Mirwa Elshakry: Darwin and Spencer in the Middle East." Elshakry's thesis explored how views of Darwin and Darwinism changed in the Arab world during the pre-WWI years.

    Discussions of Darwin in al-muqtataf [a journal] focused exclusively on either his science of natural selection or its implications for morality and religion. However, once al-muqtataf moved to British-occupied Egypt the magazine took a different approach as the editors frequently encountered the functionaries of Western imperialism.

    I wrote about Elshakry's work last year ("Darwin in the East"). I think it's worth encountering and understanding.

    It seems to me that her work is a glimpse of the forces entangling Darwinian biology with social upheaval in the late 19th century -- but it hints at an avenue of understanding the spread of biological science itself, not only in conjunction with the social impacts. I'd like to read more historical interpretation of the people actually trying to understand biology in non-Western contexts at that time.

  • "There's plenty of room at the bottom"

    Tue, 2010-01-12 07:30 -- John Hawks

    Adam Keiper has an interesting Wall Street Journal piece about how a near-forgotten Richard Feynman lecture was raised from a history-of-science footnote, "Feynman and the futurists":

    Hoping to dissociate their nanotechnology work from dystopian scenarios and fringe futurists, some prominent mainstream researchers have taken to belittling Mr. [K. Eric] Drexler and his theories. And that is where Feynman re-enters the story: Mr. Drexler regularly invokes the 1959 lecture, which broadly corresponds with his own thinking. As he told Mr. Regis, the science writer: "It's kind of useful to have a Richard Feynman to point to as someone who stated some of the core conclusions. You can say to skeptics, 'Hey, argue with him!'" It is thanks to Mr. Drexler that we remember Feynman's lecture as crucial to nanotechnology, since Mr. Drexler has long used Feynman's reputation as a shield for his own.

    There's a lot of history-of-science-type writing, usually not written by historians of science, that highlights the "first person who thought X" kind of narrative. It's often a self-serving way to give one's own ideas an impressive-sounding pedigree. Or in the opposite case, to make your rival's ideas seem like intellectual bastards. It's disheartening to read very much of it -- that was my experience reading Gould's The Structure of Evolutionary Theory.

  • Cabinet of curiosities

    Wed, 2009-11-25 01:34 -- John Hawks

    Six hundred dollars was more money twenty years ago, but it was still pretty cheap for a beautiful rosewood specimen cabinet, I'd have thought. It was full of somebody's nineteenth-century insect collection. Wait a minute -- how many nineteenth-century insect collections with 1700 specimens were there, anyway? That's a lot of work collecting. Maybe this belonged to somebody notable?

    What happened with the cabinet after it left [Alfred Russel] Wallace’s possession is mostly a mystery. Before turning up in Virginia, the cabinet was bought in 1964 by an antiques dealer from an unclaimed baggage sale in Philadelphia. He suspected that the cabinet belonged to Wallace, but never took the pains to prove it. Mr. Heggestad made some inquiries after he bought the cabinet and then let the matter drop. He kept the cabinet in his dining room until a friend advised him in 2007 that it should be in a museum. That inspired him to a flurry of research in which he compared the handwriting on the specimen labels with those in the British museum and studied the source of the specimens, putting beyond doubt that the collection was Wallace’s.

    And now it's on display at the American Museum of Natural History.

  • Darwin in the East

    Thu, 2009-10-29 16:40 -- John Hawks

    Nature has started a series of essays called "Global Darwin" on the way that Darwin's theory influenced non-Western scientific and political traditions. The first entry, by Marwa Elshakry, puts forward a claim about the reaction of some adherents of Eastern and Islamic traditions to Darwin in the late nineteenth to early twentieth centuries:

    Yet the main reason for the worldwide success of Darwin's ideas was the ease with which they were assimilated into local traditions of thought — as the example of the Jewish attempt to reconcile science with scripture hints. Although Darwin himself may have found such reconciliation surprising, it was certainly not as unusual as he might have imagined. Scholars from Calcutta to Tokyo and Beijing constructed their own lineage for the theory of evolution by natural selection, tracing it to older and more familiar schools of thought and claiming ownership of what they saw as the precursors to these ideas. Although some, particularly in Europe, saw Darwin as a weapon beating down religious beliefs, around the world he was as much a force for religious resurgence and revivification as for religious scepticism. Even nineteenth-century Muslim thinkers reconciled Darwinian ideas with their own past religious and philosophical texts; which may seem ironic, given the rise of Muslim creationists today.

    I didn't find the whole of this essay to be very satisfying. It does provide a few interesting examples of individuals making statements about Darwinism in integrative ways. But the essay does not look at the integration of Darwinism into the biology or naturalist traditions of non-Western cultures. I think that a close examination would be necessary to separate the political overtones of Darwinism -- broadly, an argument in favor of progress -- from the actual reception to the theory by people in a position to understand it.

    As it is, Elshakry shows that some reformers favored a "Darwinian" approach to social change, as a bulwark against more revolutionary ideas. Such arguments did exist, but I think it's worth remembering that Marxism was based on its own evolutionary theory -- elevated to quasi-Darwinian status by some social thinkers -- and was broadly a defense of violent overthrow of the existing order. At the same time, Darwin's theory was part of the Western intellectual tradition that threatened to impose hegemony over non-Western cultures, so a resistance to Darwinism was a possible avenue of nationalism. Certainly that plays a role in the late twentieth-century resurgence of creationism in the Islamic world, as well as the rejection of Darwin/Mendelian inheritance by Stalin's USSR. It would be interesting to see how that dynamic plays out in other contexts.

    My point: many have deliberately confused aspects of biological theories (including evolution) with social change, which is an error. Giving a list of interesting errors might make for a great essay, but mixing them with the general theme of "assimilation" apparently didn't.

    References:

    Elshakry M. 2009. Global Darwin: Eastern enchantment. Nature 426:1200-1201. doi:10.1038/4611200a

  • Mailbag: Jonathan Swift on Norman Borlaug

    Sun, 2009-09-13 23:22 -- John Hawks

    Re: Norman Borlaug, a reader sends this quote from Jonathan Swift:

    " that whoever could make two Ears of Corn, or two blades of Grass, to grow on a Spot of Ground where one grew before, would deserve better of Mankind and do more essential Service to his Country than a whole Race of Politicians put together, "

  • Olivia Judson: Museum collections in the DNA age

    Wed, 2009-08-05 12:32 -- John Hawks

    In "Dawn at the museum", Olivia Judson points to the huge potential of ancient DNA techniques to wring new answers out of old taxidermied specimens.

    I think this is one thing among many -- consider also chemical/isotopic analysis, new microscopic techniques to examine histology or look for hidden pathogens, CT scanning specimens to study internal structures -- that are revitalizing museum science. Those of us who work in museums recognize the huge activity behind the scenes, enabling and advancing scientific inquiry. It's not like the Relic back there.

    Judson ends on an example that no doubt excited her inner Dr. Tatiana:

    Or take the American black duck. During the 19th century, black ducks were the most common duck to the east of the Appalachians. That changed in the 1940s, when mallards started to arrive in large numbers; by 1969, mallards had become more common than black ducks. Moreover, genetic analysis of modern specimens shows that the two species are close — so close that they might as well be considered one.

    Again, it wasn’t always thus. DNA analysis of museum specimens collected before 1940 show that black ducks and mallards used to differ much more markedly. So what has caused the change? Hanky panky. Yes, members of the two species have been interbreeding. There are even hints that the female black ducks prefer to mate with male mallards.

    Using museum specimens to establish the historical course of genetic introgression breaking down species barriers. Cool.

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Neandertals

For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.

Denisova

From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.

Acceleration

The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.

Malapa

Just outside Johannesburg, the Malapa site is producing some of the most exciting finds in human evolution. This site is the headquarters of the Malapa Soft Tissue Project.