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THE KNOWLEDGE FEED

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Project a Movie Through a Pizza Box

Sonia Weiser

You Can Be Taught Perfect Pitch—Even as an Adult

Shaunacy Ferro

Nonmusical adults can be taught to identify notes—especially if they have good memories.

13th Century Gambling Relics Discovered in Utah Cave

Caitlin Schneider

12 Things You Might Not Know About 'The Screwtape Letters'

Mark Mancini

C.S. Lewis’s most popular non-Narnia novel is a delicious, perceptive treatise on the weaknesses of human nature.

'Dementor' Wasps Turn Their Victims Into Zombies

Shaunacy Ferro

The venom of Ampulex dementor causes cockroaches to lose control of their bodies.

12 Offbeat Holidays You Can Celebrate in June

Hannah Keyser

The days are getting longer—the summer solstice is the 21st of this month—which means there's plenty of time to celebrate each of these quirky holidays.

The Henry Doorly Zoo, Where Prairie Dogs Run Wild

Hayley Harding

10 Awesomely '80s Electronic Prizes From 'Press Your Luck'

Mike Nothnagel

Put away that ginormous mobile phone and revel in the glory that was 1980s technology.

Want to Be Less Biased? Take a Nap

Shaunacy Ferro

Researchers reduced people's implicit racial and gender biases by having them undergo anti-bias training—and then take a nap.

14 Terrifying Terms to Know for the Return of 'Jaws'

Angela Tung

A Brief History of CNN’s First Day on the Air, 35 Years Ago

Jennifer M Wood

The 24-hour news cycle may seem like an age-old concept. But it was popularized by CNN just 35 years ago.

Take a Trippy Journey into an M.C. Escher Drawing

Sonia Weiser

10 Pre-Sunscreen Methods for Dealing with the Sun

Gillian Finklea

A quick look at the ways we protected ourselves from UV rays before the advent of modern sunscreen will make you thankful that all you need to stay safe is a friend to do your back.

The Missing Links: The Greatest Film Sets Ever

Colin Patrick

15 Facts About Frida Kahlo's 'Self-Portrait with Thorn Necklace and Hummingbird'

Kristy Puchko

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