Earth Day began as a protest in 1970, but its meaning has evolved. Here’s how it changed - and what it represents today.

Ever wonder how our planet keeps life thriving behind the scenes? From air and water to land and climate, Earth's systems ...

How much do you know about our planet? Here are the amazing, odd and downright cool Earth facts scientists learned in the ...

Earth formed within such a precise “Goldilocks zone” for oxygen that a 5% change would have prevented life from emerging.

This Earth Day, we reflect on our home planet and look at Earth from space through history.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...