THE KNOWLEDGE FEED

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Grave Sightings: William McKinley

Stacy Conradt

Get up close and personal with the 25th president's final resting place: a 96-foot tall memorial in Canton, Ohio.

12 Back-to-School Facts About 'Welcome Back, Kotter'

Kara Kovalchik

Forty years ago, the Sweathogs arrived for class.

Why Do I Gag When Someone Else Barfs?

Amanda Green the mag

The reality behind the reflex.

The Mystery of Knut the Polar Bear's Death Has Finally Been Revealed

Michele Debczak

Scientists have discovered the missing piece in Knut's tragic story.

The Men Who Invented Fun: A History of Wham-O

Jake Rossen

A peek inside the zaniest toy factory in American history.

12 Lesser-Known Wham-O Products You Have to See to Believe

Jake Rossen

The makers of the Hula Hoop would also like to interest you in a bomb shelter.

Name the State That Borders the Two Given States

Take the quiz!

What's the Difference Between Aluminum and Aluminium?

Caitlin Schneider

A little peer pressure goes a long way in the chemistry world.

Morning Cup of Links: Ramping Up the Star Wars Hype

Miss Cellania

The Science Behind Antarctica's Blood Falls

Jen Pinkowski

Iron-rich brine from a subglacial lake accounts for Blood Falls' creepy crimson hue.

A Beautiful Townhouse With a Garden on Each Floor

Rebecca OConnell

Japanese architect Ryue Nishizawa designed a five story townhouse covered in plantlife.

10 Facts About Krakatoa's 1883 Eruption

Erin McCarthy

This eruption—one of the most powerful and devastating eruptions in modern history—had effects worldwide.

Staring Into Someone's Eyes For 10 Minutes Can Cause Hallucinations, Study Says

Hannah Keyser

Staring into someone's eyes for 10 seconds? Romantic. Staring into someone's eyes for 10 straight minutes? Kind of creepy—and, apparently, hallucinogenic.

14 Bizarre College Donations and the Strings Attached

Ethan Trex

For most of us, college donations entail little more than occasionally dropping a small check in the mail after receiving repeated pleas for cash from our alma maters.

Book-Scented Candles for Bibliophiles

Kirstin Fawcett

Yes, your apartment can smell like a library—even if it's too small for one.

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