A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

Rather than a volcanic winter, the Toba eruption 74,000 years ago resulted in several years of warm and dry weather, ...

How core-mantle differentiation influenced the distribution of volatile elements on Earth. Imagine Earth's history as a ...

Watch the Earth's tectonic plates grow, shrink, and jostle for position in this new model of the last billion years on the ...

Water from both volcanic rocks and deep mantle melted Earth's crust 1.6 billion years ago. This long-lasting melting formed ...

I’ve had a surprising number of comments telling me the Earth is flat. 50. 50 comments telling me the earth is Flat. And ...

Our human species emerged in Africa around 300,000 years ago but scientists don't yet have a clear picture of what kind of ...

A giant sequoia located in Sequoia National Park in California, the General Sherman is 52,500 feet in volume and is more than ...

It’s the perfect Mother’s Day adventure whether Mom is a seasoned hiker or someone who considers the walk from the parking lot to Target as her daily exercise. The journey begins at the north shore of ...