National Geographic : 2009 May
• the timing of the two events matches closely." The extinctions also coincided, however, with the arrival of another ecology-altering force. Modern humans arose in Africa about 195,000 years ago and spread into north- ern Eurasia some 40,000 years ago. As time went on, their expanding populations brought increasing pressure to bear on prey species. In addition to exploiting mammoths for food--- a big male killed in the autumn would see a band of hungry hunters through many lean winter days---they used their bones and ivory to make weapons, tools, figurines, and even dwellings. Some scientists believe that these human hunters, using throwing spears fitted with deadly stone points, were as much to blame as climate change for the great die-o . Some say they caused it. e debate over the megafaunal extinction is one of the liveliest in paleontology today, and not one likely to be resolved by a single specimen, no matter how complete. But Khudi was right that the now missing baby---its esh, internal organs, stom- ach contents, bones, milk tusks and other teeth, all intact---would be of enormous interest to the outside world. He also suspected that a person willing to handle such a thing would probably turn a nice pro t---ivory traders regularly visited the region to buy mammoth tusks, and who knows what they d pay for an intact mammoth? Khudi s suspicions soon fell on one of his own cousins, whom some local Nenets had seen on the sand- bar and later, riding away on his reindeer sled toward the town of Novyy Port. Khudi and Serotetto set o in pursuit on a snowmobile. When they arrived, they found the little mammoth propped up against the wall of a Researchers transported the mammoth in a refrigerated container from Siberia to Jikei University s medical school in Tokyo to be CT scanned. Hospital o cials insisted that handlers wear special suits and a plastic passage be erected to ensure that ancient bacteria from Lyuba would not contaminate their facility.