A new study could explain why some ancient animals, like mammoths, crossed the Bering Land Bridge to North America during the last Ice Age while others, like woolly rhinos, stayed put in Eurasia.

The research, entitled "The Bering Land Bridge During the Last Glacial Stage ... receded and filled the oceans at the end of ...

Though few people travel here today, archaeologists believe that ancient populations migrated from Russia into the Americas across this stretch of land during the Ice Age 10,000-12,000 years ago when ...