It's crazy to think people once believed the earth was flat. One step too far and you'd be sent tumbling into the depths of ...

In honor of Earth Day, here are 25 facts about the history of our celebration of Mother Earth, as well as facts about the environment that may serve as a wake-up call for action.

Here are some fun facts about Earth as we celebrate this planet we live on for Earth Day.

Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

One of the strongest earthquakes ever recorded has struck Russia’s Far East, causing tsunami waves in Japan and Alaska and ...

To mark Earth Day, NBC’s Brian Cheung joins TODAY to break down numbers and facts about the blue planet, including how it got its name and how many miles food may travel to get to your plate. He ...

Earth serves as our fragile and precious home. As far as scientists are aware, it's the only astronomical object known to ...

Imagine the entire Earth locked in a deep freeze, covered in ice from the poles to the equator. This is the essence of the Snowball Earth hypothesis, a theory that suggests our planet may have ...

The heyday of dinosaurs, the Jurassic era saw Earth’s climate change from hot and dry to humid and subtropical. The Jurassic ...

In honor of Earth Day, here are 25 facts about the history of our celebration of Mother Earth, as well as facts about the environment that may serve as a wake-up call for action.