Pipeline boosters just won’t give up. Now they've joined a lawsuit arguing that Obama shouldn’t have rejected Keystone.
The Gulf of Mexico is a goldmine for offshore oil.
Parts of Antarctica are breaking off and moving away from the continent at speeds of up to three feet per day.
Fossil fuel companies will collect $100 million and counting from taxpayers.
A new report highlights the threats to food security and medicine supplies but also reveals 2,000 new species are discovered each year.
Ethiopian farmers innovate to fight drought -- and win big.
Solar is cost-competitive with diesel in some remote Alaskan towns, a study found.
Not all sea-level rise is caused by global warming — but you wouldn’t know it from the headlines.
The late-night host analyzes Trump’s coal-mining dance, strange hand gestures, and outdated hairspray obsession.