Det äldsta kapitlet i människans historia
torsdag 1 oktober 2009
En 4,4 miljoner år gammal humanoid tar oss längre tillbaka än någonsin tidigare på släktträdet, mycket nära den den tid vi separerade från schimpansen. ScienceNow (som har en videopresentation av fyndet) skriver:
Läs artikeln om Ardipithecus ramidus här. Lägg namnet Ardi på minnet.
Researchers have unveiled the oldest known skeleton of a putative human ancestor--and it is full of surprises. Although the creature, named Ardipithecus ramidus, had a brain and body the size of a chimpanzee, it did not knuckle-walk or swing through the trees like an ape. Instead, "Ardi" walked upright, with a big, stiff foot and short, wide pelvis, researchers report in Science. "We thought Lucy was the find of the century," says paleoanthropologist Andrew Hill of Yale University, referring to the famous 3.2-million-year-old skeleton that revolutionized thinking about human origins. "But in retrospect, it was not."
Läs artikeln om Ardipithecus ramidus här. Lägg namnet Ardi på minnet.
[Länk till detta inlägg] upplagd av Anders Hesselbom @
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Citat:
[ID] is not a scientific argument at all, but a religious one. It might be worth discussing in a class on the history of ideas, in a philosophy class on popular logical fallacies, or in a comparative religion class on origin myths from around the world. But it no more belongs in a biology class than alchemy belongs in a chemistry class, phlogiston in a physics class or the stork theory in a sex education class. In those cases, the demand for equal time for 'both theories' would be ludicrous. Similarly, in a class on 20th-century European history, who would demand equal time for the theory that the Holocaust never happened?Richard Dawkins
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Evolutionsteori.se drivs av Anders Hesselbom och Johan Karlsson
