It’s as close as we can get to Mars without leaving the planet—and it’s up for sale. If you didn’t make the list for Blue ...

Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...

The origins of plate tectonics on Earth are hotly debated, but evidence from Australia now shows that parts of the crust ...

If the new age of these Canadian rocks is solid, they would be the first and only ones known to have survived Earth’s earliest, tumultuous time.

Along the eastern shore of Hudson Bay in Canada's northeastern province of Quebec, near the Inuit municipality of Inukjuak, ...

Geologists have long debated whether a stony formation in Canada contains the world’s oldest rocks – new measurements make a ...

The world's oldest rocks are spread across the globe and paint a picture of Earth's turbulent early history. Here are some of the most notable and important formations scientists have discovered.