Read the latest articles from Popular Science (Page 763)

Physics

Scientists are one step closer to solving the mystery of MLB’s home run surge

A new study suggests seam height and batting technique could be to blame.

By Lauren Theisen

couple building an artificial christmas tree

Sustainability

Your Christmas tree’s environmental impact has nothing to do with whether it’s real or fake

Don’t stress about what kind you buy—stress about what you do about it after the holidays.

By Bert Cregg/The Conversation

Medicine

Antibiotic over-prescription is worst for kids in low-income countries

And too many meds can lead to drug resistance and future health dilemmas.

By Sara Kiley Watson

Aviation

Boeing puts the brakes on 737 Max production

There will be a backlog of commercial-airliner orders as the company works out its safety issues and waits for FAA clearance.

By Rob Mark/Flying Magazine

Animals

Watch meerkats engage in a fiercely adorable war dance

These little carnivores mean serious business.

By Sara Chodosh

Space

Why the definition of a planet is always changing

The debate didn’t start or end with Pluto.

By Christopher Palma/The Conversation

Heart Disease

Of course the most likely time to have a heart attack is on a holiday

Home is where the heart attack is.

By Sara Chodosh

Health

New evidence points to mass graves of people killed in Tulsa’s 1921 race massacre

For forensic scientists, really old crime scenes are a trove of information

By Kate Baggaley

a woman with her eyes closed listening to something with headphones

The Weirdest Thing I Learned This Week

Listen to this shiver-inducing introduction to the science of ASMR

Get to know this bizarre phenomenon—and the people who hate it.

By Popular Science Team

an image of stars in the center of hte milky way captured by ESO astronomers

NASA

There’s an ancient starburst in the heart of the Milky Way

A stunning new image hints at our galaxy’s tumultuous past.

By Jessica Boddy

A northern sea otter swims on its back in Kodiak National Wildlife Refuge.

Animals

A modest proposal for hunting sea otters

As the marine mammal takes a bite out of the fishing industry, some are asking if it’s time to cut down on otter numbers.

By Michael R. Shea/Field & Stream

Tech Hacks

Want to spend less time on your phone? There’s an app for that.

Fight technology with technology.

By David Nield

Psychology

Why do other people’s embarrassing acts make us cringe?

When someone does something cringe-worthy, it might be more about you than them.

By Benjamin Powers

Security

Tips for keeping your security cameras secure

Prevent your security camera from compromising your privacy.

By Stan Horaczek

Health

The first long-term study on e-cigarettes confirms that vaping is bad for your lungs

We’re just starting to understand the health impacts.

By Kat Eschner

a circular saw bolted to a jig that makes it into a chop saw

Projects

Save space and money with this chop saw conversion project

Two tools for (almost) the price of one.

By John Kennedy

Evolution

Monkey mouth sounds could push the evolution of speech back by 27 million years

Only humans have full language, but whether primates had any of language’s key elements is still hotly debated.

By Thomas R. Sawallis & Louis-Jean Boë/The Conversation

Environment

Everything that happened at COP25, a potentially world-changing climate conference

It showed the power of the people like never before.

By Kat Eschner

Sour cherries at one of Frederiksdal’s orchards.

Science

Denmark’s best wine is made from cherries

The scientific case for cherry wine.

By Mary Holland/Saveur

Global Warming

Indoor carbon dioxide can make us dumber, and that will get worse with climate change

It’s time to think of the gas itself as a pollutant.

By Ula Chrobak

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