Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

For instance, at the end of the Permian period, a mass extinction ... To some researchers, this suggests Earth's crust may have been recycling in the Hadean. Water weakens the crust, creating ...

Today, only the largest planets in the solar system have rings, but a new study suggests Earth may have been a ringed planet ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a sun-like star, ...

At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a ...

Evidence from Colorado suggests glaciers once covered Earth to the equator, supporting the Snowball Earth theory. This ...

Global warming caused vital Atlantic Ocean currents to collapse just before the last ice age, a new study suggests. The weakening currents triggered a cascade of effects, resulting in a dramatic ...