Popular Science. Demystifying the worlds of science and technology since 1872.

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Rachel Feltman

Rachel Feltman

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Latest Articles

Frog eating hornet in cage
Wildlife

Pond frogs devour murder hornets, stinger and all

Insect venom means nothing to some amphibians.

several full fish laying on ice. the fish are orange, white, and multicolored
Fish

Afraid your fish is too fishy? Smart sensors might save your nose

Microneedles can tell when things start getting rancid long before we notice smells.

Photograph of the fresco Trionfo della Morte, taken at its original location in the Camposanto Monumentale in Pisa. The fresco, known as the “Triumph of Death” and attributed to the painter Buonamico Buffalmacco, is not precisely dated; scholarly estimates range from 1335 to 1350. While it does not depict the Black Death explicitly, the selected detail shows victims of an epidemic from diverse social backgrounds, their souls carried off by demons.
Climate Change

Medieval volcanoes may have ignited the Black Death

More than just rats and fleas added to the ‘perfect storm’ plague.

A macro, close-up photograph of the bottom of a human nose, clearly showing the two nostrils and the texture of the surrounding skin. The eyes are closed in the background.
Ask Us Anything

Why we have two nostrils instead of one big hole

Our nostrils share the workload like coworkers on rotation.

Portrait of monkey. Close-up monkey have a rest. Fooling around. Eating bananas. Thailand
Wildlife

The surprising world of animal penises and what they reveal about humans

It’s true-birds don’t have a penis.

Arm in noninvasive glucose monitoring device
Diabetes

Goodbye, finger pricks? Diabetes patients could monitor glucose with lightwaves.

Future versions of the noninvasive prototype may be as small as a watch.

Nov. 19 image obtained by Pau Montplet from Breda (Girona) using a C6 telescope at f:7. Original image is in the lower right inset, while a false color 0.6º wide Larson-Sekanina filtered image at 9º shows 3I in negative to remark the antitail pointing to the subsolar point, and several jets getting out from the false nucleus. Two additional arrows mark wavy structures in the jets. Image resolution is 0.7 arcsec/pix. Credit: arXiv (2025). DOI: 10.48550/arxiv.2511.19112
Solar System

Infamous 3I/ATLAS comet is covered in ice volcanoes, surprising astronomers

It’s still not aliens, but the interstellar comet keeps getting weirder.

a mom and daughter camping with their dog. a tall mountain is in the foreground
Dogs

Pet dogs can help teens’ mental health

Dogs can increase bacteria that help teen brains and bellies stay in sync

Close up of young rhesus macaque monkey eating peanut
Wildlife

Escaped lab monkey finds new home at New Jersey animal sanctuary

Forrest spent a week on the run in southeast Mississippi last October.

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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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