THE KNOWLEDGE FEED

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Dream Car 123

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Dream Car 123

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What is art?

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What is art?

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Ape Women: 10 Dedicated Primate Researchers

Miss Cellania

Women are doing amazing work in primatology, the study of monkeys, apes, prosimians, and even humans.

Why Are There 5,280 Feet in a Mile? Making Sense of Measurements

Ethan Trex

Why are there 5,280 feet in a mile, and why are nautical miles different from the statute miles we use on land? Why do we buy milk and gasoline by the gallon?

Brain Game: Tom, Telling Time

My friend Tom is an odd bird. He's into science, but not into history. He enjoys Wednesdays, but not Saturdays. He likes wrenches, but not pliers. He prefers whistles to bells.

Morning Cup of Links: Vaudeville Calling!

Miss Cellania

Psychological research conducted in WEIRD nations may not apply to global populations. America is certainly WEIRD: Western, Educated, Industrialized, Rich and Democratic.

The Great American Midnight Feast

the mag

Thanks to a national love of highways and hash browns, diners have dotted the country's landscape for more than a century, serving as little oases of grease and

Meet Dorothy Peterson, Octogenarian Table-Tennis Shark

the mag

Dorothy Peterson is more than a grandmother in her 80s; she's a cold-blooded table-tennis assassin. And she's got the trophy case to prove it.

Math in Nature

Chris Higgins

Here's a beautiful short film demonstrating mathematical principles as they appear in nature: Nature by Numbers.

Last Week's Most Popular Stories

Jason English

In case you weren't obsessively refreshing mentalfloss.com all week, here's what you

The World's Best Retirement Plan (for Chimpanzees)

the mag

When older Americans retire, they can look forward to Social Security checks.

Morning Cup of Links: Abandoned Films

Miss Cellania

The Best Movies Never Made.

FDR's Hot Dog Party With King George VI

Jason English

Left to Right: Mrs Franklin D. Roosevelt; King George VI of England; Mrs.

The Weekend Links: Sunday Edition

Allison Keene

From great links-contributor Jan, experience the majesty and wonder of China's Rainbow-Colored Fields, and the story behind this anomaly.

Amazing Found Photos of Life During Wartime

Ransom Riggs

The good stuff's usually on the back.

The Weekend Links: Saturday Edition

Allison Keene

So what do you do with those little bread tags? Do you wish there was another purpose for them besides trash? Turns out, there can be!

Lunchtime Quiz Leftovers

Jason English

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