What are some of the largest extraterrestrial impacts to effect Earth? Learn what we’ve seen in history, and what is ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Historically, there have been four oceans: the Atlantic, Pacific, Indian, and Arctic. On Feb. 9, U.S. Secretary of the ...

But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...

existed in Earth’s oceans and atmosphere. So a major implication of the study is that pale-green dot worlds viewed from space are good candidates planets to harbour early photosynthetic life. The ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

Ancient oceans, which were heavy on iron, interacted differently with light wavelengths, retracting green light into the ...

Earth is the only known planet which has plate tectonics today. The constant movement of these giant slabs of rock over the ...

Earth's oceans may have displayed a very different color several billion years ago. This hypothesis emerges from a recent study conducted by a Japanese team. Researchers from Nagoya University ...