Read the latest articles from Popular Science (Page 439)

The best model rocket kits
Gear

Best model rocket kits

Take your next STEM project into the sky with an interactive rocket-building kit. No need for NASA, we'll blast off right from home.

night sky stars and Milky Way above mountain background
Aviation

NASA’s new investigation seeks to explain unusual phenomena in the sky

The panel of 16 experts is tasked with establishing a roadmap for future UAP analysis and investigation.

a lioness with a mane
Evolution

The rare case of a lioness with a mane

Caretakers at Topeka Zoo in Kansas are trying to piece together why one of their lionesses is suddenly sporting the extra fur.

A single large leaf, with some crinkly, brown edges that may be indicative of a nutrient deficiency.
Life Skills

What your houseplants’ yellowing leaves are dying to tell you

Learn to diagnose a struggling houseplant, no medical degree required.

The 10th-generation iPad with a Pencil plugged in
Tablets

Apple iPad (10th gen.) early review: It’s going through changes

Apple's new iPad offers an updated design, more power, and a few quirks.

Roofgarden in Rotterdam, Netherlands
Engineering

Pumping carbon dioxide waste to rooftop gardens boosts crop yields

Researchers funneled a building's carbon emissions to rooftop gardens—and the results were delicious.

Rhododendrons blooming.
Biology

Multiple species of Rhododendron thrive by taking turns to bloom

This genus of plants evolved so that they could all blossom without competition.

Hurricane Roslyn
Weather

Category 3 Hurricane Roslyn hit Mexico with landslides, flash flooding, and strong winds

So far, local authorities report two casualties.

Gamma-ray burst from exploding galaxy in NASA Hubble telescope rendition
Black Holes

To set the record straight: Nothing can break the speed of light

Objects may not be as fast as they appear with this universal illusion.

Why you shouldn’t follow TikTok’s DIY dental advice
Health

Why you shouldn’t follow TikTok’s DIY dental advice

At-home dentistry is almost always a terrible idea.

The US never banned asbestos. These workers are paying the price.
Pollution

The US never banned asbestos. These workers are paying the price.

As other countries outlawed asbestos, workers in a New York plant were “swimming” in it.

Person working with laptop in front looking at phone
Tech Hacks

How to schedule emails on the go

What's the hurry? Your messages don't have to go right away.

The IVAS system in January, 2021.
Military

Why the Army hates AR goggles

Motion sickness is just one of the problems with the Integrated Visual Augmentation System.

This beautiful jay holds together a unique Western ecosystem
Birds

This beautiful jay holds together a unique Western ecosystem

In the last 50 years, the population of pinyon jays has declined by an estimated 80 percent.

Close up of solar panel in green field at sunrise
Technology

Global CO2 emissions grew by less than a percent this year thanks to renewables

The International Energy Agency's new report signals a major reversal from last year's staggering increase.

brain cells on a multi-electrode array
AI

What Pong-playing brain cells can teach us about better medicine and AI

A system called “DishBrain” could be important for testing epilepsy and dementia drugs in the future.

A Sumatra tiger in the jungle
Wildlife

Some of Asia’s iconic wildlife doesn’t seem to mind human encroachment

Tigers, Asian elephants, wild boars, and clouded leopards have had population growth despite people living nearby.

a closeup of honeybees on honeycomb
Biology

The first honeybee vaccine could protect the entire hive, starting with the queen

Vaccinating the queen bee provides immune protection for all of her offspring.

three jack-o'-lanterns on stoop
Projects

Make wooden Jack-o’-lanterns you can reuse for many happy Halloweens

These DIY jack-o'-lantern boxes are creepy, versatile, and simple.

Two armed laundry folding robot folding a t-shirt
AI

Meet the world’s speediest laundry-folding robot

The 'SpeedFolding' robot is still not as fast as a human.