Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

Discover how scientists found and dated the oldest rocks on the planet, and why studying them can help explain how life on ...

Canadian researchers said they'd found the world's oldest rocks in northern Quebec. The find was controversial. But after ...

Using coupled isotopes, a new study shows that a class of economically important granites are derived by sediment melting without mantle input.

Volcanoes on Mars might be more widespread than previously thought, and this has an impact on the planet's past habitability.