Fascinating.

Wind. How does it work? It's the sort of question that makes you scoff at first—'of course I know what wind is!' But then after a few moments of trying to formulate the definition in your mind, you start to second guess yourself. 'It definitely has something to do with the sun. And pressure. It's air, but like, moving.' When I saw @zachsilberberg's tweet admitting he doesn't totally understand what wind is, I had to take a moment to channel my inner second grader and remember all those cartoony

Happy Earth Day