Why are there two tides a day? – TED Ed

Dig into how the Sun and Moon are responsible for the tides on Earth, and what this force looks like on other celestial bodies….
How do ocean currents work? – TED-Ed

Dive into the science of ocean currents…In 1992, a cargo ship carrying bath toys got caught in a storm…
What is the Tragedy of the Commons? – TED Ed

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…