The ancient Greeks proved over 2,000 years ago that the Earth was round and figured out how big it was by using simple observations of the Sun. But how do people know this today? When you drop ...

Teaching our kids about the planet, its resources, and how to appreciate and protect them is one of the most important tasks ...

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 ...

Mars, the fourth planet from the sun, is a dry, rocky world. Its famous red color has earned it the nickname the Red Planet. Mars has fascinated people throughout history, and today, it is one of the ...

Do you know a kid who is learning about climate change? We made a comic about how it's changing the planet and how to deal with the big feelings you might have when you hear about it. Climate change ...