This tiny skeleton, just 6 inches long, was found a decade ago in Chile's Atacama Desert. Scientists now report that DNA and other test results prove that it is human. Fox Mulder believes otherwise. "Alien-Looking Skeleton Poses Medical Mystery" (Discovery, thanks Syd Garon!)
And here is more about this specimen's provenance and its unwitting participation in a new documentary about ETs visiting Earth, titled Sirius.