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Teenage boy with dark curly hair with braces exercising good dental using a water pick while looking at his reflection in a bathroom mirror.
Ask Us Anything

Do water picks really work? Dentists weigh in.

Water flossers can be effective, but don’t throw out your string floss just yet.

By Anne Ewbank

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Phosphorescent paint inspired Victorian-era Australians to dress up as ghosts and pull pranks

Plus, Louis Pasteur’s secrets and other weird things we learned this week.

Rachel Feltman

Rachel Feltman

Host

At Popular Science, we report and write dozens of stories every week. And while a lot of the fun facts we stumble across make it into our articles, there are lots of other weird facts that we just keep around the office. So we figured, why not share those with you? Welcome to The Weirdest Thing I Learned This Week.

Latest Articles

person opening faucet with water flowing
Life Skills

PFAS are toxic and they’re everywhere. Here’s how to stay away from them.

It might be impossible to eliminate them completely, but you can certainly reduce your exposure.

By Sofia Quaglia

aston martin valhalla on road
Vehicles

The 2026 Aston Martin Valhalla Supercar is truly a super car

All hail the new World’s Easiest Car to Drive Fast.

By Dan Carney

a smiling man in a yellow hooded sweatshirt wears a virtual reality headset over his eyes
Security

Skull vibrations could be your next password

Like fingerprints, our noggins have unique vibrations that could be used as a login.

By Laura Baisas

24 new species of deep sea organisms. they are small and resemble shrimp
Wildlife

New crustacean named after its unique butt

Along with 23 other newly discovered critters living in the deep-sea.

By Laura Baisas

Man disappointed in what he sees in his refrigerator
Food Safety

Is it safe to eat cold leftovers?

A microbiologist explains.

By Primrose Freestone / The Conversation

High angle view of unwrapped chocolate bar with bite out on pink background
Nutrition

Is dark chocolate healthier than milk chocolate?

Two dietitians explain.

By Lauren Ball, Emily Burch / The Conversation

a man in a ship
Life Skills

How to watch Star Wars in order—even the shows

If you’re settling in for a Star Wars marathon of galactic proportions, the order you watch everything in may matter.

By Debbie Wolfe

Clouds and the Sun illuminate the sky on Wednesday, Jan. 28, 2026, as NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft stand vertical at Launch Complex 39B at NASA’s Kennedy Space Center in Florida.
Moons

The best way to watch the Artemis II launch is on C-SPAN

Yes, that C-SPAN.

By Andrew Paul

Healthcare, hand and iv with a patient in a hospital bed for recovery or rehabilitation closeup. Medical, wellness and treatment with a sick person lying in a clinic on a saline solution drip.
Insects

Parasitic sleeping sickness creates ‘invisibility cloak’ to hide in humans for years

After 40 years, biologists made a breakthrough in understanding the deadly disease.

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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