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 ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

1. Earth is not a perfect sphere. Yes, we've all been taught that the Earth is not flat, but it may shock you to learn that it's not perfectly spherical either. As the National Oceanic and Atmospheric ...

9. On Earth Day in 2011, people planted 28 million trees in Afghanistan as part of a "Plant Trees Not Bombs" campaign. 10. Since the first Earth Day, average annual temperatures in the contiguous ...

Science has a funny way of humbling certainty. Most of us carry a mental picture of how Earth works that was assembled in ...

From its 1970 origins to a global movement, Earth Day 2026 highlights the power we all have to protect our planet. When you purchase through links on our site, we may earn an affiliate commission.