This year’s national Earth Day theme, “Our Power, Our Planet,” reminds us of our collective power to restore and protect the ...

Yet despite the drumbeat of evidence, we still know of just one planet in the cosmos with life — the one you’re standing on.

Earth Day is April 22. Here's what to know about how Earth Day happened and how to celebrate our planet this April.

Venus will pass between the Earth and sun on Saturday during ... inferior conjunctions when swinging between the sun and our planet. For Venus, these events happen relatively often, every 19 ...