Stories from the coolest day jobs in the world.
In 2000, the ozone hole was at its largest. Read on for more facts about the ozone hole.
How green are aerosol cans now, with chlorofluorocarbons out of the picture?
Some answers from an atmospheric scientist
A state-by-state breakdown of policies that could change your community.
Worms, planets, extra dimensions: just a few of the things that inspire the most creative young scientists of the year
On the 40th anniversary of Earth Day, we take a look back at where it all began
An artificial intelligence that saved humanity from invaders 28 years ago breaks its silence to meet with human ambassadors. They have no idea what is in store.
Our experts tackle your toughest science questions
Harvard has a world-class trove of valuable astronomical data. But it's in the form of half a million glass photographic plates
Our editors scrounged up some truly frightful facts.
Cheery happy times
Shock Trauma photo gallery, by Popular Science staff photographer John B. Carnett
A muscle-numbing magic wand protects cops and citizens, Jedi-style
We'll get a vaccine for addiction, debate the future of nuclear power, use new tech to take on water shortages, and-just maybe-find an extra dimension or two. Happy New Year
How a radical new implant that zaps patients back to life is upending our understanding of the brain
Texas Schoolbook Massacre
Ten amazing projects built by teens.
Why would a petro-state erect a solar-powered eco-metropolis in the middle of the Arabian desert? To change the world.
2016 has been a rough year, but it's not all doom and gloom
The curious history of mankind's most vital resource. No, not oil.