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NASA says that a ban on CFCs enacted in the 1980s has contributed to a 4 percent rebound since 2000 in atmospheric ozone in mid-northern latitudes.

Two major doughnut chains have bowed to consumer pressure to better police their palm oil purchases. Environmentalists say it's a win for consumers, trees and animals.

As part of the ongoing recovery from Hurricane Sandy, New York's plan is to buy and demolish hundreds of homes on Staten and Long islands and let nature return as a barrier to future storm surges.

Health leaders now say the Ebola epidemic is growing exponentially. That means, if nothing changes in the next few weeks, we could see at least 60,000 Ebola cases by the end of 2014.

"There is such a thing as being too late," President Obama says in his address to the U.N. Climate Summit. The White House is touting tools to boost "global resilience" in the face of climate change.

Most U.S. poultry is bathed in a little chlorine on the way to your plate. But that treatment is banned in Europe. Now "chlorinated chickens" are a sticking point in a trans-Atlantic trade deal.

In writing her new book On Immunity, Eula Biss found that questions about vaccination touch on attitudes about environmentalism, citizenship and trust in the government.

"For the first time in modern history, the eastern basin of the South Aral Sea has completely dried," NASA says, citing satellite photos from 2000 and 2014.

Researchers have found a gene that affects how strongly you experience bitter flavors. And those who aren't as sensitive eat about 200 more servings of vegetables per year.

Hundreds of thousands are expected at a march in New York City ahead of the United Nations climate summit. Organizers want to send a message to world leaders that it's time to take concrete action.