The dark history of Mount Rushmore - Ned Blackhawk and Jeffrey D. Means

The dark history of Mount Rushmore – Ned Blackhawk and Jeffrey D. Means

Between 1927 and 1941, 400 workers blasted 450,000 tons of rock from a mountainside using chisels, jackhammers, and a lot of dynamite. Gradually, they carved out Mount Rushmore. Now, the...

Why is the Mona Lisa so famous? - Noah Charney

Why is the Mona Lisa so famous? – Noah Charney

As dawn broke over Paris on August 21st, 1911, Vincenzo Peruggia hoisted a painting off the wall and slipped down the back stairs of the Louvre. He was close to...

Why do cats have vertical pupils? - Emma Bryce

Why do cats have vertical pupils? – Emma Bryce

Peering into the eyes of different animals, you’ll see some extraordinarily shaped pupils. But why? It turns out that pupil shape is a powerful indicator of what role an animal...

Which animal has the best eyesight? - Thomas W. Cronin

Which animal has the best eyesight? – Thomas W. Cronin

The animal kingdom boasts an incredible diversity of eyes. Some rotate independently, while others have squiggly-shaped pupils. Some have protective lids, others squirt blood. But which creature has the best...

What is “normal” and what is “different”? - Yana Buhrer Tavanier

What is “normal” and what is “different”? – Yana Buhrer Tavanier

In 1945, two sculptures meant to represent the average man and woman in the United States went on exhibit at the American Museum of Natural History. Based on measurements taken...

Why doesn't everyone have a jetpack? - Richard Browning

Why doesn’t everyone have a jetpack? – Richard Browning

On April 12, 1961, Soviet cosmonaut Yuri Gagarin piloted a 2,400 kilogram spacecraft in humanity’s first manned space flight. One week later, Bell Aerosystems debuted another advancement in aviation: the...

Building the impossible: Golden Gate Bridge - Alex Gendler

Building the impossible: Golden Gate Bridge – Alex Gendler

In the mid-1930s, two familiar spires towered above the morning fog. Stretching 227 meters into the sky, these 22,000-ton towers would help support California’s Golden Gate Bridge. But since they...

Why are US cities still so segregated? - Kevin Ehrman-Solberg and Kirsten Delegard

Why are US cities still so segregated? – Kevin Ehrman-Solberg and Kirsten Delegard

On October 21st, 1909, 125 residents of an affluent Minneapolis neighborhood approached William Simpson, who’d just bought a plot in the area and told him to leave. The Simpsons would...

Are the Northern Lights dangerous? - Fabio Pacucci

Are the Northern Lights dangerous? – Fabio Pacucci

On September 1st, 1859, miners following the Colorado gold rush woke up to another sunny day. Or so they thought. To their surprise, they soon discovered it was actually 1...

Watch this if you're scared of snakes - Andrew Whitworth

Watch this if you’re scared of snakes – Andrew Whitworth

We get it, not everyone loves snakes. You may not want to encounter one in the wild. To each their own! That’s why we’re here, to take you on a...

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