What is the tragedy of the commons? – Nicholas Amendolare

Is it possible that overfishing, super germs, and global warming are all caused by the same thing? In 1968, a man named Garrett Hardin sat down to write an essay about overpopulation. Within it, he discovered a pattern of human behavior that explains some of history’s biggest problems. Nicholas Amendolare describes the tragedy of the commons.

The first asteroid ever discovered – Carrie Nugent

Over the course of history, we’ve discovered hundreds of thousands of asteroids. But how do astronomers discover these bits of rock and metal? How many have they found? And how do they tell asteroids apart? Carrie Nugent shares the story of the very first asteroid ever discovered and explains how asteroid hunters search for these celestial bodies.

Explore cave paintings in this 360° animated cave – Iseult Gillespie

The paintings of our ancestors have been preserved in caves all over the world; the oldest we’ve found were made up to 40,000 years ago. What do these images tell us about the ancient human mind and the lives of their creators? In this special 360° TED-Ed animation, explore an ancient cave and its surroundings as Iseult Gillespie shares a brief history of cave paintings.