GLOBAL WARMING

Global warming increases the risk of world instability, a climate report prepared for the World Bank warns.

The "deep decarbonization" analysis is a road map for reaching U.S. climate change goals.

But most Americans say people in developing countries will be worse off than they will because of climate change.

Global warming is a key factor in this week's "Arctic blast" cold snap that has chilled the entire U.S. and dropped feet of snow on upstate New York.

The U.S. will commit $3 billion to climate change efforts in poor countries, President Obama will announce Friday.

New robotic “dolphin” technology has changed the way scientists collect data in isolated polar regions.

Right now, China produces the most carbon dioxide of any country in the world, having surpassed the U.S. in 2007.

Under the terms of the ambitious pact, Xi Jinping agreed to cap emissions for the first time while Obama pledged deeper cuts for the U.S.

The future of the U.N.’s IPCC is uncertain, as experts debate whether its climate reports are worth the effort.

Climate change affects each continent differently.

A U.N.-backed panel's latest climate-change report furnishes more evidence human-generated greenhouse gases are fueling global warming.

A report shows there was more oil than they thought, but environmentalists aren’t impressed.

Superstorms like Sandy may feel like rare events, but climate scientists warn that these powerful storms are now the new norm. Are we ready?

New research says the shrinking Arctic sea ice is to blame for Europe's recent severe winters.

European Union leaders have made an "ambitious" deal to slash greenhouse gas emissions. Some think it's too much, others think it's not enough.

Politicians on both sides are trying to get voters excited about environmental issues — if not for the midterms, then for 2016.

A repeat of last year's extreme temperatures and snowfall is "unlikely," according to a national winter outlook.

A 20-page report released by the Pentagon on Monday warned that climate change could soon pose a direct threat to national security.

Even as ice cover in the Arctic continued to shrink rapidly, the other end of the globe is witnessing record high sea-ice levels.

Scientists have miscalculated just how much heat has been added to the planet's oceans over the last century.

Scientists may have linked California's drought to man-made climate change, according to a new study.