Read the latest articles from Popular Science (Page 730)

Black lives matter protesters.
COVID-19

Essential first aid tips for protesters

How to dress for success, stanch bleeding, and avoid COVID-19 while marching.

Neutron stars
Particle Physics

Why are big neutron stars like Tootsie Pops?

The massive beasts are dense on the outside and gooey on the inside.

protesters at a rally for black lives matter
Health

Racism is undeniably a public health issue

Identifying racism in this view could lead to positive change.

pills with blurred out medication box in the background
COVID-19

A major study just found hydroxychloroquine doesn’t prevent COVID-19

Scientists are scrambling to collect good data on the controversial drug.

Cheese shop
Nutrition

Almost everything you know about cheese is wrong

Shredded cheese doesn’t melt as well and other fascinating facts about fromage.

A bowl of saag or spinach paneer
Science

Eight international cheeses you need to try once

From chewing gum to cherry blossoms, learn how different cultures approach cheese-making.

police at a protest
Weapons

How to protect yourself from rubber bullets—and why these ‘nonlethal’ weapons are so dangerous

In cities across the US, police have been shooting rubber bullets into crowds. Here’s how you can protect yourself.

artistic rendition of a dinosaur
Dinosaurs

Mummified ankylosaur offers a rare glimpse of a dinosaur’s last meal

Stomach contents from the armored dinosaur reveal it was grazing on a landscape recently scoured by fire.

a phone with the Apple Mail app visible, with some notifications
Tech Hacks

Dig up any old email in your inbox. Even if it’s in the trash.

Outsmart Gmail, Outlook, and Apple Mail.

wooden derby cars
Projects

Meet the dads who can’t quit pinewood derby racing—even after their kids are over it

Adults are in a league of their own when it comes to hand-crafted cars that lead the pack.

These two red dots are actually identical. Here’s how
Science

These two red dots are actually identical. Here’s how

It’s all thanks to the Ebbinghaus illusion.

prison gardens
Mental Health

Nature helps nurture relationships between incarcerated mothers and their children

How environmental psychology and therapeutic landscaping transformed one Iowa prison.

person using diabetes equipment to test their blood sugar
Diabetes

Sea snail venom could lead to better insulin for diabetics

A venomous sea snail that lives at the bottom of the ocean could be the key to superior insulin.

Hiker climbing a snowy mountain.
Life Skills

Nine traits that’ll keep you calm in a life-threatening situation

Mental toughness is the first line of defense when you’re faced with death.

A blue morpho butterfly spread out on a plant
Animals

We can soon thank butterfly tongues for better cancer treatments and vaccines

A closer look at the elaborate insects that have inspired engineers in countless ways.

people outside in masks
Health

You might not recognize your office when it reopens again

Here’s everything you need to know about the coronavirus pandemic this week.

Angler holding up a panfish.
Projects

A beginner’s guide to freshwater fishing

Choose the right bait and strategy to nab common species like rainbow trout and walleye.

suburb
Environment

The 160-year-old reason you’re obsessed with your lawn

Frederick Law Olmstead aimed to bring nature to suburban doorsteps. Instead he helped create a dead zone for wildlife.

SpaceX’s Crew Dragon capsule sits atop its Falcon rocket, ready to launch.
Space X

NASA and SpaceX pulled off their first rocket launch. Watch every second of it here.

The first crewed launch from American soil since 2011 went smoothly after the initial scrub.

people outside wearing face masks
Vaccines

Why only half of Americans say they would get a COVID-19 vaccine

Not enough people would elect to get vaccinated to create a protective herd immunity effect, a survey suggests.