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A young three-toed sloth climbing in a tree peers out at camera from moss-covered branches.
Wildlife

Why sloths risk their lives to poop

Every week, sloths climb down to do their business on the forest floor—where predators lie in wait.

By Jennifer Byrne

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The Baffling Cases of Spontaneous Human Combustion

The Baffling Cases of Spontaneous Human Combustion

The Real Reasons Permanent Daylight Savings Time Never Stuck

The Real Reasons Permanent Daylight Savings Time Never Stuck

The Experiment That Tried to Weigh the Human Soul

The Experiment That Tried to Weigh the Human Soul

Latest Articles

a small kangaroo with brown fur sits in a tree and eats a long green plant
Wildlife

Watch adorable animals compete for best chewer in 2026 Crunch-a-Thon

The campaign spotlights an endangered marsupial.

By Margherita Bassi

chopped bamboo pieces
Projects

How to remove bamboo from your yard

Step one: Identify which type of bamboo you’re dealing with.

By Debbie Wolfe

Close up of an airplane toilet with the lid open.
Ask Us Anything

Why airplane toilets are tiny engineering marvels

There’s a reason for that very loud sucking sound.

By Popular Science Team

The exterior of the reconstructed Catholic chapel at Historic St.Mary's City in St. Mary's City, Maryland
Biology

1.3 million people share DNA with Maryland’s earliest colonists

Some are even related to the former colony’s first governor.

By Andrew Paul

a robot scouring a reef
Fish

It’s a barracuda! It’s a shrimp! It’s a robot helping coral reefs.

Passive sensors and high resolution cameras help this robot find signs of coral reef.

By Mack DeGeurin

A photo of the Guangxi reed snake on the forest floor
Wildlife

‘Two-headed snake’ confuses predators

While the Guangxi reed snake isn’t venomous, it excels at confounding foes.

By Andrew Paul

spider on hand
Spiders

Meet the mosquito terminator – a spider that likes us and eats our enemies

Jumping spiders live almost everywhere around the world.

By Fiona Cross / The Conversation

Four ISS astronauts smiling beside floating oranges, peppers, apples, and an onion
NASA

ISS astronauts pose with fresh fruit in microgravity

A Cygnus XL spacecraft recently brought produce, oxygen tanks, and even a new exercise machine.

By Andrew Paul

Chikao Umezawa, head of JA Kisarazu-shi, posed for a photo beside a robot named "Super Monster Wolf", a solar powered robot designed to scare away wildlife from farmers crops in Kisarazu, southwestern Chiba Prefecture, Japan on August 10, 2017. Wolf Bot uses an infrared ray sensor when wild animals approach. It begins to intimidate wild animals by flashing red LED lights from its eyes on and off and blaring 48 repeated different types of loud sounds. (Photo by Richard Atrero de Guzman/NUR Photo) (Photo by Richard Atrero de Guzman/NurPhoto via Getty Images)
Bears

Japan runs out of robot wolves in fight against bears

The handmade, $4,000 Monster Wolf features solar panels, sensors, and intimidating audio.

By Andrew Paul

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Popular Science has been demystifying the worlds of science and technology since 1872. We explain the inner workings of the phone in your pocket, explore world-changing innovations, and examine everything from the marvels of deep space to the secret lives of staples like bread. We deliver an engaging, approachable, and inclusive look at emerging technologies and scientific advances.
Daily, Popular Science unpacks the science behind the top current new stories, dissects the latest technology and digital trends, and helps readers live smarter, safer, and happier through clever DIY projects.

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