Stashed in: #TED, Time, Science!, The Universe, Best Videos, Carl Sagan, Mind Blown!, Physics, How It's Made, RSA Animate
Same concept explained by Carl Sagan:
10 dimensions, anyone?
Back to 4 dimensions:
Yellowstone supervolcano 'even more colossal' than previously thought
Robot Workers and the Universal Living Wage
Michelle Obama feeds apples to panda babies
Solar has won. Even if coal were free to burn, power stations couldn't compete.