Tag: John Green

When The Earth Was Purple

Picture the view of Earth from space. Beautiful, right? What colors do you see? Besides the blue of the oceans, the dominant color of our...

How Volcanoes Froze the Earth (Twice)

Imagine a world covered in ice. Estimates vary, but some scientists think at the poles, it could reach negative 130 degrees celsius. And there was...

The Earth: Crash Course Astronomy #11

The Earth is a planet. That’s a profound statement, and one that’s not really all that obvious. For thousands of years, planets were just bright...

Brotherhood 2.0: January 26, 2007

John: 1, 2, 3! Crowd: Good morning Hank! It’s… well, if yesterday was Thursday, and the day before yesterday was Thursday, then today must be…...

The Two People We’re All Related To

You have the materials inside you, right now, to unlock the story of your deep, distant ancestry. And also mine. That’s partly because you have...