Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

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 ...

Explore rare lunar eclipse facts, syzygy science, Blood Moon mysteries, history, and stunning celestial phenomena.

Planet Earth harbors a number of astonishing facts that remain unknown to many despite tremendous scientific progress, as ...

Where they live: Plants are found on every continent, even Antarctica, and every ocean. What they eat: Plants use sunlight for photosynthesis, which produces sugars that fuel them. Plants are an ...