We’ve all heard the phrase “Time is money.” But what do these two things actually have to do with one another? German Nande explains the math behind interest rates, revealing the equation that will allow you to calculate the future value...

So we ended the last episode at the North American Video Game Crash of 1983, and even though the video game market had collapsed in the United States, demand for video games remained strong in Europe and Asia. Nintendo of Japan,...

The hair on your scalp can get really long, but your leg hair doesn't sweep the floor. Why not?

If it seems like friendships formed in adolescence are particularly special, that's because they are. Childhood, adolescent, and adult friendships all manifest differently in part because the brain works in different ways at those stages...

Whales are amazing animals. Since they evolved from land mammals, their biology breaks ALL the rules! Well, as whales say, rules were meant to be broken.

What's both edible, and capable of sending you an email to let you know there's explosives nearby? Spinach! Well, spinach with some nanotechnology embedded within it. Learn how Popeye's favorite veggie is involved in the field of plant...

True Pines (conifer trees in the genus Pinus) are often confused with other members of the Pinaceae family like Picea (Spruces), Abies (Firs), Pseudotsuga (Douglas-firs) or Larix (Larches). So is very likely that your Christmas tree is...

Corals in the Pacific Ocean have been dying at an alarming rate, particularly from bleaching brought on by increased water temperatures. But it's not too late to act, says TED Fellow Kristen Marhaver. She points to the Caribbean -- given...

Glacier ice is weird. It's solid. Solid things aren't supposed to flow. But glacier ice flows like a liquid, and it does that without melting! How is this possible? I traveled to Mendenhall Glacier in Juneau, Alaska to find out.

Ever wonder why we have seasons? A lot of people think it's because the Earth gets further away from the sun in winter, and closer in the summer. But, it's actually more interesting than that. In this episode of Crash Course Kids,...

Squeaks can't sleep because the sun is too bright, and Sam the Bat stops by to talk about what makes the sun so special



DCI: ESS1.A: Patterns of the motion of the sun, moon, an
d stars in
the sky can be observed,...

Nobody knows exactly when humans began to create fermented beverages. The earliest known evidence comes from 7,000 BCE in China, where residue in clay pots has revealed that people were making an alcoholic beverage from fermented rice,...

Bears forgo many activities to conserve their energy in the winter when food is scarce, including eating, peeing, and pooping. There is one thing that they specifically DO do during the winter, though: give birth! But, giving birth...

So, how are people fixing their water problems? In this episode of Crash Course Kids, Sabrina talks about a few different examples how some freshwater sources were good, then bad, then made good again. Also, Sabrina talks about...

A 2.4-mile swim, a 112-mile bicycle ride and then a full-length marathon on hot, dry ground -- with no breaks in between: the legendary Ironman triathlon in Kona, Hawaii, is a bucket list goal for champion athletes. But when Minda...

One day, Persephone was frolicking in a meadow with the nymph, Cyane. As they admired a flower, they noticed it tremble in the ground. Suddenly, the earth split, and a terrifying figure arose. It was Hades, god of the underworld. He...