What does “OK” really stand for?

What does “OK” really stand for?

How a cheesy joke from the 1830s became the most widely spoken word in the world. “OK is thought to be the most widely recognized word on the planet. We use it to communicate with each other, as well as our technology. But it actually started out as a language...
How do we study the stars?

How do we study the stars?

This TED Ed from Harvard University’s Yuan-Sen Ting gives us a glimpse into how we can know so much about galaxies, planets, and stars. This is how astrophysicists see the universe. “Want to know the secrets of the universe? Just follow the...
Crazy, epic Rube Goldberg machine

Crazy, epic Rube Goldberg machine

Seven builders collaborate to make this epic Rube Goldberg machine, a complex chain reaction that travels through the kitchen, bedroom, bathroom, office, living room, patio, and backyard, using everyday objects to automatically pour lemonade for the entire team of...

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