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New CO2 Milestone: 3 Months Above 400 PPM

CO2 concentrations in the atmosphere have been above 400 ppm for three months in a row for the first time.

2014: A Weird Weather Year in Alaska So Far

The first five months of the year in Alaska have been unusually warm, particularly in far northern Barrow.

Could 2014 Become the Warmest Year on Record?

May 2014 was the warmest May on record. With a developing El Niño, 2014 could be the warmest year.

6 Degrees: Gnarly Maps, Warping Ice and Derelict Wells

From leaking derelict oil wells to intense folds in Greenland's ice, here are 6 stories worth a click.

San Franciscans in the Dark About Flood Hazards

A citywide effort is tackling a problem that few residents think about: rising seas and coastal erosion.

Summertime Blues? U.S. Seeing Red as Temps Rise

A regional look at how summer temperatures have been steadily rising across the U.S. since 1970.

Air Conditioner Use in Cities Trigger Vicious Cycle

Increasing use of air conditioners are worsening the problem of cities getting hotter as climate changes.

Climate Change Threatens Almighty U.S. ‘King Corn’

Heat waves and water shortages could devastate U.S. farmlands devoted to corn crop, a new report warns.

Climate Impact on Vermont May Have Benefits

Vermont is getting warmer and wetter, according to the first state-level climate assessment in the nation.

Rising CO2 Increases the Size of Poison Ivy Plants

Better grab your calamine lotion. More CO2 means bigger poison ivy plants.

Of Brazil, the World Cup and Climate Change

Temperatures have been on the rise in Brazil since the last time it hosted the World Cup.

Clean Power Plan Follows Uneven CO2 Emissions Trend

The EPA's proposed Clean Power Plan follows many ups and downs in power plant CO2 emissions.

Dust in the Wind Could Speed Greenland’s Ice Melt

Early spring snowmelt in the Northern Hemisphere could speed ice melt in Greenland.

California’s Fog is Fading Away, Crops Could Suffer

A decrease in winter fog has made driving safer, but is hurting California's $15 billion fruit & nut crop.

Global Warming Playing a Role in Australia’s Record Heat

A late fall warm spell in Australia extends a period of record warmth influenced by global warming.

Global Renewables Report Card, Map Highlight China

New renewables status report shows China is beating the U.S. in renewables investments.

The Ocean is Heating Up for Hurricane Season

One map shows Atlantic waters are warming in time for hurricane season but they're not quite there yet.

How Will We Know When El Niño Finally Arrives?

El Nino has been the climate phenomena on everyone's lips, but how will we know when it's arrived?

Here’s How Much U.S. Summers Have Warmed Since 1970

With few exceptions, summer temperatures across the U.S. have risen since 1970.

Drought Prompts Fear of Blackouts at World Cup

Brazil’s worst drought in decades is severely reducing hydropower energy supplies in advance of World Cup.

Gallery

Autumn is Falling Back Foliage color and timing has been starting later, on average, in a warming world.