Ardipithecus: We Meet At Last

Meet Ardipithecus.

This introduction has been a long time coming. Some 4.4 million years ago, a hominid now known as Ardipithecus ramidus lived in what were then forests in Ethiopia. Fifteen years ago, Tim White of Berkeley and a team of Ethiopian and American scientists published the first account of Ardipithecus, which they had just discovered. But it was just a preliminary report, and White promised more details later, once he and his colleagues had carefully prepared and analyzed all the fossils they had unearthed. “Later,” it turned out, meant 15 years.

I’ve mentioned before how unfashionable this slow-cooked style of science can be. But sometimes, it’s the only way to do things right. Getting clues about HIV by

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