The early ancestors of 100-foot-long blue whales were dolphin-sized, according to new research that explains how they and other whale giants got to be so big.
A single dinosaur tooth is helping paleontologists better understand what North America looked like right before non-avian dinosaurs went extinct.
Humanity first arose in the Eastern Mediterranean around 7.2 million years ago, suggests new analysis of fossils for a hominin species nicknamed “El Graeco.”
The once-unspoiled beaches of Henderson Island, a UNESCO World Heritage Site, were littered with heaps of plastic garbage and innumerable bits of other manmade waste.
Excavations at a five-million-year-old Tennessee sinkhole have yielded hundreds of snake bones, including the remains of an unusual new fossil species: Schubert’s Winged Serpent.
Sea spray bubbles may be tiny, but they have a big impact on climate and each is as individually unique as a snowflake.
A dinosaur embryo named Baby Louie and its unhatched siblings were incubated by a gigantic parent that closely resembled one of today’s most ornery birds.
A newly found, small-brained human relative might have shared the African landscape with modern humans and probably other hominids between 226,000 and 335,000 years ago.
Millions of hours of recordings made in national parks and other protected areas reveal what 'nature' in the US often sounds like: roaring airplane engines, accelerating cars, and clattering factories.
A small marine creature just broke the world record for ocean filtration and is a newly named champion in the fight against climate change.