dental surgery ether painting

19th Century Anesthesia and the Politics of Pain

Many doctors embraced anesthesia, but critics in the medical community protested its use, giving rise to what's known as the “ether controversy.”
Illustration of Bombardier Beetle (Pheropsophus) excreting a mixture of hydroquinone and hydrogen peroxide at speed from opening in abdomen

Bombardier Beetles Are Terrifying Nightmare Insects

In a world full of wild insect defenses, bombardier beetles stand out for the violent chemical reaction they employ to deter enemies.
Mount Everest North Face Tibet

How to Measure a Mountain

It’s not easy to measure a mountain. Mount Everest's height has been known since the middle of the nineteenth century, but how did they figure it out with no altimeters or GPS?
Victorian Microscopy

Under Victorian Microscopes, an Enchanted World

When it came time to describe what they saw under microscopes, Victorians couldn’t help but perceive a real-life fairyland.
Compass On Antique Map magnetic poles

What Happens if Earth’s Magnetic Poles Reverse?

What would happen if the Earth's magnetic poles flipped? Earth’s magnetic poles have a long history of switching from North to South and back again. 
Email friendship

How Facebook Revived the Epistolary Friendship

Would today's online, social media-based friendships look familiar to the letter-writing friends of earlier centuries, when epistolary friendships were also common?
The English Lake District, a UNESCO World Heritage Site

British National Parks Plug Into the Internet of Things

Researchers in England think connecting British National Parks to the “Internet of Things” could help better protect the national treasures at lower costs with improved experience for nature-lovers.
Cube dice

The Ancient Origins of Dice

Gambling is one of humankind’s oldest activities. Elaborate technologies and customs have emerged around games of chance. Dice in particular have drawn attention from scholars.
long-tailed macaque

Should We Fear Cloning?

Recently, two baby monkeys were cloned—the first time primates have been successfully duplicated. Why are we so afraid of human cloning?
Joshua Pearce positioning a solar panel

Converting Tobacco Fields into Solar Farms Can Save Half a Million Lives a Year

The cost of generating solar power has dropped so dramatically, it is now economically advantageous for tobacco farmers to replace tobacco with solar farms in many places.