Tierr@_de_N@die: Do you want to see the Earth breathing?
That’s what the NASA video shows us: We can see the Green Machine turning on, then, a few months later, turning off. When it’s on, when the leaves are out, those ugly, poisonous-looking swirls of orange and red vanish from the sky. The machine works. And this happens every year. It’s as though the Earth itself has lungs.
Source (phenomena.nationalgeographic.com): The Earth Has Lungs. Watch Them Breathe. – Phenomena: Curiously Krulwich