It's been called the Exxon Valdez of coal ash—a wakeup call for a fossil fuel industry. But the recent toxic ash spill in Tennessee is greater in scope than the 1989 oil spill, and despite what some conservationists are calling very real threats, the ash disaster has so far inspired apparently little concern for local wildlife.

How much does your morning glass of orange juice contribute to global warming?

Looking forward to spring? The good news is that it is coming two days earlier on average, but so are summer, autumn and winter, researchers said on Wednesday.

Americans are living longer because the air they breathe is getting cleaner, a new study suggests.

Barack Obama is expected to allow California and other states to enforce tough air quality rules soon after taking office.

The benefits of a good name only stretch so far. A "geographical indication" (GI) that legally ties products like champagne and tequila to their place of origin and cultural heritage does not always help the region it sets out to protect. Researchers at North Carolina State University in Raleigh found that tying the making of tequila to the Jalisco region of Mexico has made its production socially and ecologically unsustainable.

If it were possible to cleanse the planet by watching a movie, this would be the place to do it.

If the coming switch from analog to digital broadcasting has put you in new-television-buying mood, think twice.

Nevermind the Hollywood glitterati. Many of the films debuting at this year's Sundance Film Festival feature a more understated star known as Mother Earth, and she plays roles ranging from dramatic to mysterious to horrific.

When Jetson Green, an online magazine obsessed with green building, sets out to predict green trends in 2009, people pay attention because they've been spot-on before.