Woolly mammoths disappeared from Siberia and North America about 10,000 years ago, along with other giant mammals that went extinct at the end of the last glacial period. (sciencedaily.com)
Many giant mammals in the Americas have died out but it has been hard to say whether humans or natural events were responsible. (newscientist.com)
Although all habitable continents once harbored giant mammals, the few remaining species are largely confined to Africa. (science.sciencemag.org)