A state-by-state breakdown of policies that could change your community.
Air pollution is still a problem, especially worldwide, but these images show things have recently improved in the US.
What happens to science and technology when we shut it all down?
Some answers from an atmospheric scientist
A new study finds that trees are fueling air pollution--with a lot of help from humans
On the 40th anniversary of Earth Day, we take a look back at where it all began
How green are aerosol cans now, with chlorofluorocarbons out of the picture?
It's called body packing, it's dangerous and gross, and new technology makes gut-based drug smuggling harder to spot.
Arsenic-laced drinking water, lead-contaminated soils and choking air pollution are sadly just the start in some of the world's dirtiest places
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.
In 2000, the ozone hole was at its largest. Read on for more facts about the ozone hole.
A new study suggests an oily pate may lower ozone levels; but is the alternative any healthier?
Researchers have found naturally occurring plant chemical may help to keep the Earth's temperatures balanced
Air: It's one of the world's most important, least understood, and possibly life-saving substances
Harvard has a world-class trove of valuable astronomical data. But it's in the form of half a million glass photographic plates
Stories from the coolest day jobs in the world.
An extraordinary article of clothing is helping scientist discover the causes of asthma
Emphasis on "possible"
2016 has been a rough year, but it's not all doom and gloom