A groundbreaking international study has revealed that early Asians undertook humanity s longest known prehistoric migration walking more than 20,000 kilometers over thousands of years from North Asia ...

White-eared kob antelope in the Great Nile Migration Landscape are part of the world’s largest land mammal migration of 5 million to 7 million animals. Their migrations recently were mapped by Global ...

Caribou move along barren ground in northern Canada. The Bathurst caribou population has declined from 400,000 to less than 4,000 over the last 30 years, according to new surveys by the government of ...