GLOBAL WARMING

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.

Here are the 10 greenest cities in the U.S.

Natural gas is not the “bridge fuel” to a low-carbon future as many have claimed.

In lower Manhattan, hundreds of protesters held a sit-in ahead of the U.N. climate change summit.

Hundreds of environmentalists from various groups gathered in lower Manhattan’s Battery Park as a follow-up to the People’s Climate March.

On Sunday, some 400,000 people marched along Manhattan's west side in what is being called the biggest climate change demonstration in history.

Between June and August, the average global temperature was 62.7 degrees Fahrenheit -- 1.28 degrees higher than the previous century's average.

The latest federal climate data shows that three of the last eight months were the warmest since record-keeping began 130 years ago.

The new data reflects the continued burning of fossil fuels but also a potentially disturbing trend in the way the planet absorbs CO2, scientists said.

Between 2012 and 2013, carbon dioxide levels increased at a much faster rate than in any other year since 1984.

The approach would allow Obama to sidestep Congress in joining a global pact to reduce greenhouse gas emissions.