Fifty thousand years ago, North America was home to towering giants. Mammoths roamed the tundra, saber-toothed cats hunted in ...

Published in Science Advances, the study found that many species do not stick to a single daily rhythm, contradicting decades of scientific assumptions. These findings reveal the flexibility of ...

New research found that more than 22% of native pollinators in North America are at an elevated risk of extinction.