DENVER, COLORADO—Zooarchaeologist Jamie Hodgkins of the University of Colorado, Denver, thinks that climate change may have contributed to the demise of the Neanderthals some 40,000 years ago. According to a report in R&D Magazine, Hodgkins examined the remains of prey animals and found that bones of animals butchered by Neanderthals during colder periods showed higher frequencies of percussion marks. This suggests that they were processed to remove every bit of marrow. “As the climate got colder, Neanderthals had to put more into extracting nutrients from bones," Hodgkins said. "This is especially apparent in evidence that reveals Neanderthals attempted to break open even low marrow yield bones, like the small bones of the feet." For more, go to "Should We Clone Neanderthals?"