Stories from the coolest day jobs in the world.
Mike Biddle could free the world from having to make new plastic. Forever.
The National Mall was transformed into a futuristic commune for the past two weeks as 20 teams from four countries erected solar-powered homes
More than 50 of the most dangerous, disgusting, humiliating and just plain bad professions
Welcome to the wonderful world of compost toilet tech
To rescue the Earth, we need bold engineering ideas that go beyond simple recycling
See how PopSci staffers are staying green this Earth Day, and get the science behind the scenes
How to make one of our most ubiquitous gadgetsâ€”every part of itâ€”environmentally sound.
Corporate responsibility looms large at this year's show, but protesters insist more companies need more proactive electronics recycling policies
On the 40th anniversary of Earth Day, we take a look back at where it all began
One full week of keeping track of absolutely everything, to see if gamification can net you a win in the game of life
You don't even have to try. The things you do as a matter of course can have grievous ecological effects
Which industries do the most damage to the environment?
It would be easy to dismiss Mitchell Joachim's fantastical vision for ecological supercities, with their flocks of jetpacks and mass-transit blimps that look like flying monster jellyfish, as science fiction—if he wasn't actually building them
The planet has limited resources of several important elements, many of which can do what no other element can. Here's what's left of the periodic table, and what would happen if we run out
Depending on who you ask, these long-ignored, widely-scattered elements are either a dealbreaker or no problem at all
An astronaut's view of the Pacific Ocean
More scientists need to recycle this noble gas.