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 ...

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

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 ...