Why we created the Environmental Protection Agency—and why we still need it
It’s getting harder and harder to breathe
The most polluted city on Earth scored 999 on an index that maxes out at 500
One of 10 insane ideas that just might save the world
Amid hazardous levels of air pollution
Oh, right -- that's why we're doing this climate conference thing!
Not as sparkly as a diamond, but much better for the environment
Keeping up with the droneses
Farms are in a "smog panic" as plants falter without sunlight
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.