One day, we could be using the cold darkness of outer space to cool our buildings. In this TED Talk, physicist Aaswath Raman talks about the technology he’s developing to harness “night-sky cooling” — a natural phenomenon where infrared light escapes earth and heads to space, carrying heat along with it — which could dramatically reduce the energy used by our cooling systems, and the pollution they cause.

THIS IS COOL. I WANT TO LEARN SOMETHING ELSE, TOO!

Video via – TED Talks