Read the latest articles from Popular Science (Page 39)

Seattle, WA AUGUST 26, 2018: Passengers set to board the Sound Transit Link light rail train
Vehicles

US host cities made transit improvements a World Cup goooooooal

From Seattle to Atlanta, host cities used the tournament to speed up rail and bus upgrades years in the making — while trying to avoid the mistakes of past World Cups.

Young Asian mother and daughter having fun on the beach. Summer family vacation. Motherhood and wellbeing concept.
Psychology

How documenting everything changes your brain

Psychologists call it cognitive offloading, and it has upsides and downsides for your memory.

Magnesium chloride flakes, ionic mineral compound - Sea salt
Projects

4 Epsom salt uses around the house (and 7 ways to never use it)

It's a myth that Epsom salt works in gardens.

1998 The Killer asteroid in "Armageddon."
Space

How to stop a killer asteroid

From high-speed battering rams to gravity tractors, the technology exists to protect the planet. The question is whether humanity will act in time—and in concert.

Two small dogs wearing blue sunglasses sit in a blue toy car, giving the impression they are driving. They are posing outdoors with houses visible in the background.
Cats

Animals have personalities. Here’s what shapes them.

From shelter dogs to stickleback fish, the forces that shape animal personality are surprisingly familiar.

a whale underwater
Wildlife

11 captivating images from the Exposure One Photography Awards

Black, white, and beautiful.

An aerial view of a flooded area, with trees and power lines visible.
Weather

A very strong El Niño may be approaching. Here’s what it could mean for the world’s weather.

Get ready to batten down the hatches, maybe.

two turkey chicks in a box with a feather duster as a stand-in for its mother
Birds

Orphaned baby turkeys think a feather duster is their mom

‘It’s safety, it’s warmth. And that really does help with these animals in rehabilitation.’

Tick in the grass
Projects

How to keep ticks out of your yard

Skip the essential oils.

Weber pellet grill, gas grill, and flat top on a grass background.
Home

Weber’s summer sale drops gas grills, pellet smokers, flat tops, and more to their lowest prices of the season

Whether you're smashing burgers, smoking a brisket, or just grilling up some dogs, every kind of outdoor cooker is on sale at Weber's site right now.

Aerial photo of Waymo self-driving taxi on street in San Francisco
Self Driving

Police can’t find shoplifter who fled in self-driving Waymo

San Francisco cops remain stumped 6 months after the crime.

A caucasian young woman with a blue backpack looking for her seat in the airplain. Waiting in the row
Aviation

The fastest way to board an airplane, according to science

Better, faster boarding methods exist, so why don’t we use them? 

Bicentennial Parade, 1976. (Photo by © Wally McNamee/CORBIS/Corbis via Getty Images)
Photography

13 incredible photos of America’s 1976 bicentennial celebration

From massive firework displays to grocery store banners.

James Webb Space Telescope (JWST) image of the highly distorted red galaxy MRG-M0138 seen through a foreground cluster of galaxies (white sources). Via the phenomenon of gravitational lensing, the same background galaxy is multiply imaged four times and the white square shows the most magnified image which was studied by Newman and colleagues using the NIRSpec Integral Field Spectrograph onboard JWST. The data measures the velocity for each portion of the image within the white square. The top bar shows an angular scale of 5 arcsec. Credit: NASA/JWST
Black Holes

JWST spots dormant black hole 10 billion light-years from Earth

It's the farthest object of its kind ever seen by astronomers.

a moon, poop emoji, plant emoji
Engineering

NASA wastewater system will turn human poop into plant food

University of North Dakota grad students will test the system that's destined for the moon.

an aerial view of a lake in scotland with a human made island visible underneath the water
Archaeology

Scotland’s ancient human-made islands are dripping with secrets

Crannogs may have been built by the country's early inhabitants some 4,000 years ago.

Bowhead whale family swimming together in calm blue ocean water, Mother cares calf. Aerial view pod of bowhead whale spouting hug play. Whale watching of migrate Baleen whales South Africa. Shark
Whales

The Cold War’s accidental whale observatory

Built to track enemy submarines, the Navy’s underwater listening network inadvertently revealed that whales may be singing across entire oceans.

Blanket fort inside basketball gym
Engineering

World’s largest blanket fort built at Las Vegas community center

The 14,103-square-foot engineering marvel and Guinness world record holder filled a basketball court.

The new microraptor dinosaur Jian changmaensis (left) attacks the early bird Gansus yumenensis (right) in what is now the Changma Basin of northwestern China approximately 120 million years ago. Credits: illustration by Lewis LaRosa, colorized by Jão Canola.
Evolution

Velociraptor’s cousin flew like a flying squirrel

Four 'wings' helped the crow-sized avian dinosaur glide.

two large eaglets in a nest at sunrise
Birds

Eaglets Sandy and Luna spend their first night alone on the nest

But don’t worry, mama Jackie slept not too far away.