T. Rex: Asian Ancestors Migrated to North America
New research suggests T. Rex's ancestors migrated from Asia to North America. Climate changes and extinction events likely influenced their massive size during the Late Cretaceous period.
Why didn’t the Vikings colonize North America?
"Greenland was weeks away in terms of getting goods to market [in Europe], which made for a difficult trade network operation," Kevin McAleese, a curator at Rooms Provincial Museum in St John's in the province of Newfoundland and Labrador, told Live Science in an email.