"A group of 91 countries have agreed on a treaty that will block ships involved in illegal fishing from entering signatory ports and thus help prevent the fish going to market, the UN said on Tuesday."

"Getting involved in a social or environmental cause these days is as easy as clicking your mouse." Are we becoming a nation of slack-tivists?

Four years after Hurricane Katrina destroyed some 200,000 homes in New Orleans, the city has embraced a new and unexpected role as a laboratory for green building.

"Restrictions on the sale of incandescent bulbs begin going into effect across most of Europe on Tuesday in the continent’s latest effort to get people to save energy and combat global warming."

A rare chance for people to walk through the mile-long tunnel that gives entrance to Zion National Park was part of the park's centennial celebration.

"The shipping industry is an invisible and nearly unregulated environmental disaster."

"Indiana and Kentucky are the nation's top two states for coal ash ponds — and many of the holding basins for the toxic mess were built without the guidance of trained engineers, according to new information from the U.S. Environmental Protection Agency."

"The Station blaze [near L.A.] has destroyed more than 50 buildings and burned more than 105,000 acres of mountainous brush. Little hope of containment is seen as long as hot, dry conditions continue."

"Carbon dioxide will soon be declared a dangerous pollutant - a move that could help propel slow-moving climate-change legislation on Capitol Hill, the head of the Environmental Protection Agency said Monday."

"U.S. Senate Democrats announced on Monday a new delay on climate change legislation, which could make it more difficult for President Barack Obama to win progress on that front before a global environmental summit in December."