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To Shrink a Goat, Warm the Globe

Are rising global temperatures to blame for a stark reduction in the size of chamois in Italy?

Massachusetts, California Lead U.S. In Energy Efficiency

Massachusetts and California lead the U.S. in energy efficiency, according to annual ranking.

What’s The Deal With Europe’s Climate Talks?

European Union will decide this week how hard the continent will work to slow global warming.

Polar Vortex Spiked U.S. CO2 Emissions in 2013

The polar vortex spurred a spike in CO2 emissions in 2013 as people cranked up their heat last winter.

Zombie Glacier Surprises Scientists

Discovery of a semi-lifeless glacier in southeastern Iceland creates a new zombie class of frozen rivers of water.

El Niño Brings Floods, Risks — and Opportunities

El Niño ups the odds of flooding in some spots, but that information could provide opportunities.

Regulations Could Douse North Dakota Gas Flares

New regulations in North Dakota aim to reduce CO2 emissions from flaring natural gas wells.

Hot News: 2014 On Track to Become Warmest Year

The "odds are good" that 2014 will be the warmest year in the books, fueled by record ocean warmth.

LEDs are a Bright Idea Whose Time Has Come

LEDs could help slow global warming and illuminate the developing world. Now that's worth a Nobel Prize.

6 Degrees: Security Risks, Tornadoes and Earthquakes

A new climate report from the Pentagon, tornado trends, earthquakes and more in this week's top climate news.

Picture This: Seasonal Rainbows & A Monster Hurricane

Hurricane Gonzalo was an imposing site in images, while the sun cast a shadow across a cold front.

Climate Change Takes Center Stage on Instagram

An Instagram takeover puts climate change on display right next to selfies and latte art.

Jack Frost Not Exactly Nipping at Your Nose

The frost-free season is growing longer across the U.S. overall. Check the trend in your city.

Tornado Days Decreasing, but Number Per Day Rising

Tornadoes are seeming to cluster together so that there are fewer days with tornadoes, but more tornadoes on the days that do have them.…

Winter Unlikely to See Repeat of Frigid Polar Vortex

The bouts of polar vortex incursions that happened last winter are unlikely this year, NOAA says.

Evidence Connects Quakes to Oil, Natural Gas Boom

Flurry of recent studies show that earthquakes are a side effect of the U.S. oil and gas boom.

Frost Free Season is Getting Longer

All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring…

What’s Behind Recent Flurry of Hurricane Activity?

A flurry of hurricane activity in the Atlantic basin is linked to a phenomenon called the MJO.

Calif. Heads for Warmest Year As Drought Hangs On

Despite a wet September out West, drought is still a major concern as heat continues to bake the region.

Scientists: EPA Underestimating Renewables Potential

Electricity in the U.S. can be a lot more climate-friendly than the Obama administration expects it to be, a new report says.

Gallery

Arctic Sea Ice: Heat Shield Arctic sea ice acts like a heat shield, reflecting most of the sun's energy.