On the 40th anniversary of Earth Day, we take a look back at where it all began
Stories from the coolest day jobs in the world.
A state-by-state breakdown of policies that could change your community.
A new study suggests an oily pate may lower ozone levels; but is the alternative any healthier?
How green are aerosol cans now, with chlorofluorocarbons out of the picture?
Arsenic-laced drinking water, lead-contaminated soils and choking air pollution are sadly just the start in some of the world's dirtiest places
A white noise machine is the simplest solution to blocking out noise.
Harvard has a world-class trove of valuable astronomical data. But it's in the form of half a million glass photographic plates
Worms, planets, extra dimensions: just a few of the things that inspire the most creative young scientists of the year
Nearly a decade ago, NASA built an Earth-monitoring satellite that could have observed global warming in action. Then the agency stashed it in a warehouse in Maryland, where it remains to this day.
Air pollution is still a problem, especially worldwide, but these images show things have recently improved in the US.
At a speech at Georgetown University, he laid out the basics for how the country will combat climate change--whether or not Congress helps.
Western architects have grand plans for helping China solve its expanding environmental crisis. But the world's dirtiest country already has the power to clean up all on its own
Depending on who you ask, these long-ignored, widely-scattered elements are either a dealbreaker or no problem at all
A new device that amplifies waves and captures their energy could soon power parts of Rhode Island
The algae systems can capture most of the phosphorus and nitrogen in runoff
Some answers from an atmospheric scientist
In 2000, the ozone hole was at its largest. Read on for more facts about the ozone hole.
A new study finds that trees are fueling air pollution--with a lot of help from humans
A cautionary tale of how not all warnings labels are needless legalese.
So an industrial accident has blanketed your countryside in millions of cubic feet of caustic sludge. Now what?