Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

A day on Earth was just 23.5 hours long, 70 million years ago. Researchers discovered this by studying the growth rings of ancient mollusk fossils. The findings could tell us more about or planet ...

Over two hundred fifty million years ago, India, Africa ... the collision of India with Asia we must first look beneath the Earth's surface. The continents are carried by the Earth's tectonic ...

Orcas evolved from a small deer-like species that roamed the earth more than 50 million years ago. They are among the most formidable animals in the ocean — pack-hunting creatures that feed on ...