A new analysis of rock samples brought back from NASA's Apollo missions help clear up questions about the moon's formation and lava-covered early years.

A new discovery about how rocks on Earth rusted and turned red could help predict what will happen with future climate change, researchers report.

New research used spots on Earth, including Iceland and Idaho, to study the seasons on ancient Mars.

"An extremely interesting question is, what has Earth encountered in its path around the galaxy?" A new method looks to rocks to find out.

Earth's magnetic field locks information into lava as it cools into rock. Millions of years later, scientists can decipher this magnetic data to build geologic timelines and maps.

To avoid global warming on a catastrophic scale, nations need to reduce emissions and find ways to pull carbon from the air. One promising solution: spreading rock dust on farm fields.

Martian meteorites allow scientists here on Earth to decode that planet's geology, more than a decade before the first missions are scheduled to bring rocks back home from Mars.

"...an evolution of the mantle of the Earth could control an evolution of the atmosphere of the Earth, and possibly an evolution of life."

"We found that in regions where weaker rocks are present, earthquakes may rupture faults under low friction."

Rockfalls on the moon leave their mark on the surface. A map of 136,610 rockfalls indicates that asteroid impacts are a likely cause.