Read the latest articles from Popular Science (Page 616)

duolingo haitian course promo ad miami
Technology

How Duolingo added Haitian Creole to its language library

Peek inside how the app designs new language experiences.

Man in blue shirt writing math onto a black chalk board.
Science

Your brain uses different neurons to add and subtract

Researchers in Germany used electrodes to observe peoples' brain activity while solving math problems.

Merging white dwarf stars can create a new kind of star.
Physics

Rare ‘upside-down stars’ are shrouded in the remains of cannibalized suns

A rare type of star probably forms when two stars spiral around each other and smash together.

A park with tree canopy and benches in the fall.
Sustainability

Urban green spaces can’t beat climate change on their own

It takes more than a patch of green to make a city sustainable.

Why Volvo will start ‘mega-casting’ its new electric vehicles
Electric Vehicles

Why Volvo will start ‘mega-casting’ its new electric vehicles

It could be an important way to simplify the process of building future EVs in Sweden.

a nascar tire
Vehicles

Everything new on Nascar’s ‘Next Gen’ vehicles

Bigger wheels, a new modular chassis, and more. The Next Gen cars pack in a lot of changes.

Perseverance Mars rover with a camera lens takes a picture of itself on a red dusty planet
Mars

Happy Mars-iversary, Perseverance

A look back on some of the rover’s best moments over this last Earth year.

A child standing in front of a TV, watching a show or a movie.
Tech Hacks

How to stream your personal video collection to any device

It’s like your own DIY streaming service.

How electronic warfare could factor into the Russia-Ukraine crisis
Weapons

How electronic warfare could factor into the Russia-Ukraine crisis

Russia could carry out electronic warfare as part of an invasion. Here's what to know about this invisible kind of military technology.

An atomic clock at the National Institute of Standards and Technology's JILA.
Physics

The most precise atomic clocks ever are proving Einstein right—again

One of the atomic clocks can track time to within one second over 300 billion years.

Spotify Car Thing review
Audio

Spotify Car Thing review: Touch and go

Spotify wants to take over all screens, just like every other app on your phone. Maybe it doesn't need to?

A polymer sheet is suspended on a holey grid. The super strong material can be used in buildings, cars, and cell phone devices.
Technology

This new material is as strong as steel—but lighter

A new polymer synthesis mechanism opens doors to transform common plastics into membrane form.

a bald eagle perched on a branch
Pollution

Eagles face another major threat in the US: lead poisoning

A survey of more than 1,000 bald and golden eagles highlights a drastic increase in poisoning linked to lead-based ammunition.

Person wearing headset
Tech Hacks

7 tips to help you get more out of Discord

Level up your chatting game.

Flooding in Brazil has killed at least 104 people.
Environment

Historic downpours in Brazil trigger deadly mudslides and floods

At least 100 people were killed, and dozens are still missing.

Stack of books and e-reader in a library.
Sustainability

You may need to read dozens of books each year to offset that new e-reader

Occasional readers should stick with paper for now.

two red cells attack a white cell, the cells have been pseudo-colored
Gene Editing

A ‘living’ cancer drug helped two patients stay disease-free for a decade

CAR T-cell therapy and related therapies that harness immune cells are getting closer to a 'cure' for some cancers, clinicians say.

A person using a Macbook laptop on a wooden table with an iPhone next to them.
Tech Hacks

It’s time to let your computer and phone hook up

Now, sync.

tanks in a field
Weapons

The tanks, rockets, and other weapons that Russia has in its arsenal

It remains unclear what will happen with Russia's built-up forces near Ukraine. These are some of the modern machines in its military.

Russian figure skater Kamila Valieva wearing a purple costume, shown in three different poses on the ice during a program at the 2022 Beijing Winter Olympics
Heart Disease

Kamila Valieva’s ‘doping’ drug probably doesn’t give athletes an edge

Trimetazidine can help with chest pain. But there's no hard proof that it would improve a figure skater's performance.