Read the latest articles from Popular Science (Page 30)

A "smile" can mean a happy or nervous dog.

Say hello to the ‘Nagatitan.’

For animals, certain colors scream poison.

The resemblance is uncanny.

A molar points to some sophisticated dental work performed by our extinct cousins.

NASA's Perseverance rover has traveled nearly 26 miles since landing on the Red Planet in 2021.

A chemical compound inside the bacterium may offer an eco-friendly way to block harmful UV rays.

Millions of people ride amusement park rides every year with few serious injuries—but experts say a few precautions still matter.

Murl, Cutti, Pip, Checkers, and Gopher will monitor trails, haul supplies, and help with search and rescue efforts.

Abandoned rocket parts, dead satellites, and more circle the planet.

A large sensor, fast zoom lens, and tactile controls make this an appealing alternative to cameras like the Fujifilm X100 series.

Cordless multi-tools, drywall cut-out kits, framing nailers, and a 15-amp 13-inch planer are all marked down across nearly 90 RIDGID deals.

Centuries-old work songs still possess real psychological benefits today.

A landslide dumped 64 million cubic meters of rock into the popular Tracy Arm fjord.

High schooler Evan Budz's award-winning invention can identify coral bleaching, invasive species, and microplastics without disturbing marine ecosystems.

In Europe in the 17th, 18th, and 19th centuries, nearly a dozen cases of supposed spontaneous combustion were reported.

Sandy and Luna's vision rivals that of adult bald eagles.

Yes, it works—if you have small fingers.

Researchers imaged taste receptors responding to coffee compounds for the first time.