A tyrannosaur that lived 70 million years ago in Alaska wasn't nearly as big as Tyrannosaurus rex, but it wasn't as small as originally thought.

Ancient Arctic communities traded with the outside world as early as 7,000 years ago, DNA from the remains of Siberian dogs suggests. Analysis of the DNA shows that Arctic pups thousands of years ...

A collection of fossils discovered in northern Alaska shows that birds were nesting in harsh Arctic environments as early as 72.8 million years ago. The fossil assemblage, uncovered from the Late ...