Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a time when complex life emerged on Earth.

Earth's rotation isn’t constant; its spin is gradually slowing down over time. According to scientists, the length of a day ...

The Titanoboa, a massive serpent that lived around 58 to 60 million years ago, was the largest snake to ever exist. Stretching up to 45 feet (13.72 m) and weighing around 2,500 pounds (1.13 ton) ...

Scientists still debate what drove the Cambrian explosion, but the most popular theory is that oxygen in the Earth’s atmosphere slowly began to increase about 550 million years ago, said Erik ...

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a time when complex life emerged on Earth.