Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

as well as looking at some fascinating Earth Day facts. 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 ...

Or that it may once have been purple? Here are 50 facts about Earth. Gravity pushes extra masses of water and earth into a bulge, or "spare tire" around our planet. At the equator, the ...

Earth harbors incredible secrets, from remnants of a planet that formed the Moon residing deep within, to ancient auroras illuminating the skies. The planet's molten core influenced early human ...

Earth's atmosphere protects the planet in more ways than one. This thin band of air is unique to Earth, and we wouldn't exist without it. When you purchase through links on our site, we may earn ...

Earth Day is one of the most popular and widespread nonreligious holidays in the world. Although the event was primarily based in the United States, by 2009 the coordinators for Earth Day helped ...