A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...

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

The prehistoric crocodile relative may have tolerated both freshwater and saltwater habitats, allowing it to conquer North ...

More than 22% of native pollinators in North America are at an elevated risk of extinction, the research found. Researchers blame habitat loss, pesticide use and climate change for the problem.