Natural History

Gemstone turns out to be fossil of an unknown dinosaur

Primates might have first evolved in ... North America?

'Unicorn' DNA has been collected and analyzed for the first time

Living things unlike anything else on Earth found in random dirt sample

A massive impact crater has been hiding under Greenland's ice sheet

9 surprising facts about Neanderthals

Satellite reveals remnants of ancient continents under Antarctica's ice

Scientists had no idea where the world's tiniest flightless bird came from, until now

Scientists have pinpointed the exact city and year that HIV first spread

Scientists unearth 15,000-year-old tools that may have belonged to the first Americans

Oldest fossils ever found may actually be rocks

What was Earth's first animal? New study finally offers an answer