Read the latest articles from Popular Science (Page 20)

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
Deep Space

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.

close up of a cow in a pen, chewing dry grass
The Weirdest Thing I Learned This Week

Vintage vaccine skeptics thought medicine would turn kids into demon cows

Plus horror movie empaths and other weird things we learned this week.

A dramatic, low-light photo of a person with dark skin against a blue background, experiencing intense distress or pain. They are clenching their jaw and holding their hands to the sides of their head, with blurred motion around their head suggesting movement, panic, or disorientation.
Mental Health

What happens to your body during a panic attack?

'Just breathe' is more than just a nice saying.

1804 dollar seen from the front and back of the coin.
Internet

A long lost silver dollar may be worth $5 million

The ‘King of American Coins’ remained hidden in a late collector’s archive for decades.

Martian landscape taken by rover
Mars

How to tell time on Mars

Physicists finally know how much faster time moves on the Red Planet.

a scared man with several dental tools in his mouth
Medicine

Quieter dental drills may be on the horizon

The high-pitched whine of dentistry tools creates a lot of anxiety, especially for kids.

Ants checking pupa cocoon against white background
Insects

Sick baby ants sacrifice themselves to save their colony

New research shows ill pupae emit a chemical signal before ever leaving their cocoons.

Canon T7 DSLR header
Cameras

The Canon T7 DSLR camera is down to its lowest price ever at Amazon for a limited time

This is one of the best entry-level DSLR cameras ever made for its lowest price of all time.

a couple riding bikes in the pouring rain while holding umbrellas
Weather

What does ‘chance of precipitation’ really mean? A meteorologist explains.

Here's how to figure out if you can leave the umbrella at home.

Large green anaconda in grass
Wildlife

Anacondas have been huge for over 12 million years

The snakes behind the blockbuster are megafauna throwbacks.

Helly Hansen Cascade HELLY TECH Waterproof Mid-Cut Hiking Boots on the Bruviknipa trail in the fjords northeast of Bergen, Norway
Outdoor Gear

2025 holiday gifts guide: 20+ editor-approved presents for the hikers on your list

In 2025, I tested layers and accessories on day hikes from the fjords of Norway to Grand Teton in Wyoming (with some Manhattan meandering in between). These are some top picks for outfitting my adventures and yours.

A dress inspired by the paradise riflebird, uses a new ultra-black fabric created in Cornell University’s Responsive Apparel Design Lab.
Physics

The darkest fabric ever made is now a dress

A bird’s ultrablack feathers inspired this versatile material.

A brightly coloured illustration which can be viewed in any direction. It has many elements to it working together: men in suits around a table, someone in a data centre, big hands controlling the scenes and holding a phone, people in a production line. Motifs such as network diagrams and melting emojis are placed throughout the busy vignettes.
Social Media

How to glimpse a pre-AI internet

Slop Evader isn't meant as a solution, but it gives a temporary reprieve.

Edifier 1280DB powered desktop speakers on a dark blue Cyber Monday background
Speakers

It’s last call on Cyber Monday desktop speaker deals, so don’t miss out

You're not going to find better sound on a budget than these deeply discounted desktop speakers.

Medieval grave slab made from Purbeck stone in museum exhibit case
Archaeology

Medieval shipwreck mistaken for underwater ‘rubbish’

Loaded with grave slabs, the 13th century English ship was dragged to a grave of its own.