I have a weakness common to many bloggers–I like to check my site meter to see who’s coming to my blog, and from where. Often I wind up discovering intriguing sites run by people whose interests run along the same lines as mine, such as evolutionary biology. Today, however I was surprised to see a lot of traffic coming from Answers in Genesis, a creationist web site.
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I’ve been catching up on my online reading, and a couple days ago John Hawks offered this tantalizing hint that Homo floresiensis a k a the Hobbitmay be a pathological specimen. Such claims have been made before based on the small skull of the hominid, but they’ve been pretty powerfully rebutted. But Hawks is claiming that the rest of the skeleton is sickly. He seems to be basing this contention on having seen the bones, and on research by others that will be coming out soon. Now, normally I wouldn’t put much stock in this sort of off-hand remark, but Hawks has been so good on his blogthat I have to say I’m intrigued. Adding to my interest is the fact that he now retracts his suggestion that the Hobbit represented a very early migration out of Africa by australopithecines.
I’ve got an article in tomorrow’s New York Times about a startling new way to control the nervous system of animals. Scientists at Yale have genetically engineered flies with neurons that grow light-sensitive triggers. Shine a UV laser at the flies, and the neurons switch on. In one experiment, the scientists were able to make decapitated flies leap into the air by triggering escape-response neurons. In another, they put the trigger in dopamine-producing neurons, and the flash sent healthy flies walking madly around their dish. (You can read the paper for free at Cell‘s web site.)
Two of the most important stages in hominid evolution were the origin of the entire hominid branch some six to seven million years ago and the first movement of hominids out of their African birthplace. This week we now get a new look at both.
I’m guessing it’s only a matter of time before this guy gets a show on cable. Bryan Fry is a biologist at the University of Melbourne in Australia, and he spends a lot of his time doing this sort of thing–messing with animals you really really shouldn’t mess with. In addition to being telegenic, he rattles off those delicious Australian phrases, like, “No drama, mate.” (Translation: No problem.)