Hawaii was the latest stop on an epic around-the-world adventure by two Swiss pilots.
Environmentalists say Ecuador's leftist leader, Rafael Correa, gives a greater priority to business.
The case arose from the EPA's efforts to regulate pollution.
The pope puts it very plainly to leaders who might be laggards: It’s time to face climate change.
The spread is bad for the environment, according to the French official.
In what Vatican officials are calling "a heinous act," the Italian magazine "L'Espresso" leaked a draft of the hotly anticipated papal encyclical on the environment.
Bush hit back at Obama after the president told cadets climate change threatens national security.
Science got California into this desperate, desiccated mess. Can it also save it?
HBO series and its special Earth Day episode feature kids talking to kids about the environment.
The risk of another oil spill in Alaska is too high for BP to resume exploration.
Firefighters that protect the national park lands of Costa Rica have invested in drone technology to help survive this year’s fire season.
The documentary "Merchants of Doubt" looks at folks who claimed cigarettes were safe and are now focused on climate change.
“Time for tackling climate change is now,” said Apple as company announces €1.7 billion in green data centres.
“Climate change is real. The time for talk is passed. The time for action is now."
Scientists recommend eating younger, smaller fish.
A salmon-derived “waste” product could turn out to have some value.
This Christmas, e-waste levels are likely to be higher than ever.