If someone tried to put a price tag on Earth, what would that number even be based on? Land, oceans, ecosystems, raw ...

Why is Earth not just water? Where does land come from, and why does it exist? Find out more about earth's origins with Hank ...

Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing "icehouse" periods ...

On Earth Day, the globe celebrates our planet by supporting all things Mother Nature. This year, Earth Day lands on Tuesday, April 22. The day has been celebrated for 55 years, and while not federally ...

Explore mind-bending revelations in "25 Astonishing Facts About The Earth That Will Confuse You." Unveil secrets from explosive lakes to the magnetic field flip, and discover the wonders shaping our ...

This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most urgent threats facing our environment, from climate change to ...

Evidence from fossil shells suggests that falling seawater calcium helped lock away carbon dioxide and helped cool Earth after the dinosaurs.

You may have heard a lot of online chatter about Earth's two moons recently, but that doesn't quite get the discovery right. Earth still only has one true natural satellite — our 2,159-mile-wide moon ...

When the first Earth Day was held on April 22, 1970, the founders — U.S. Senator Gaylord Nelson (D-WI) and activist Denis Hayes — said its purpose was to draw public attention to what was at the time ...

Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers of ...