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Mexico, Canada, U.S. to Make Clean Power Pledge

North America's biggest countries will try to generate half of their electricity from zero-carbon sources.

‘Water Windfall’ Found in Drought-Stricken California

California’s Central Valley has three times more freshwater in underground aquifers than previously thought.

Wind at China’s Back to Amp Up Its Renewables

China can tap just 10 percent of its wind resources to supply a quarter of its power by 2030.

Dead Trees Adding to California Firefighters’ Battle

California's overworked firefighters are being forced to take on another task — clearing dead trees.

Rodent Threat Defeated As Delmarva Battles Rising Seas

Following a big eradication program, it's been a year since a nutria was detected on the Delmarva Peninsula.

Scientists Urge Obama to Halt Oil Leasing in the Arctic

Nearly 400 scientists are asking President Obama to halt oil and gas leasing in the Arctic Ocean.

Fishing For Bright Spots in a World of Sick Reefs

Through a vast ecological analysis, scientists found reef fisheries that were healthier than expected.

Climate Impacts From Farming Are Getting Worse

As the energy sector starts to clean itself up, greenhouse gases released by farming continue to rise.

India Aims to Join Paris Climate Pact

India has agreed to work toward joining the Paris Agreement on climate change this year.

Wildfires Disrupt Oil Sands, Exposing Climate Risk

Wildfires have forced a drastic cut to oil sands production in Canada, exposing a growing climate risk.

Scientists Turn Carbon Dioxide Emissions to Stone

For the first time, carbon dioxide emissions from an electric power plant have been solidified.

Bay Area Voters Approve Tax to Fix Marshes As Seas Rise

A new $12 annual parcel tax will raise $25 million for marsh restorations in the San Francisco Bay Area.

Overfishing and Pollution Kill Corals in a Warming World

Overfishing, sewage and farm pollution pose a threat to reefs around the world.

Scientists Seek a New Measure for Methane. Here’s Why.

Scientists say there's a problem with the way they account for methane's effect on the climate.

Warming Could Boost Carbon Storage in Alaska Forests

Climate change could boost the carbon sequestration potential of Alaska's temperate forests.

Easing Drought Boosts California Hydropower, For Now

The easing of California's drought has boosted the state's ability to produce hydropower.

Best Protected Great Barrier Reef Corals Are Now Dead

Great Barrier Reef corals that died had been growing in a pristine part of a well-run marine park.

America’s Sickest Wetlands Are in the West, EPA Finds

Three-fifths of wetlands in the West are in “poor” condition, but marsh restorations are underway.

Rules For U.N. Climate Pact May Take Two Years

It could take close to two years to work out a detailed rule book for a sweeping shift from fossil fuels.

As Disaster Risks Rise, 20 Nations Get Help to Prepare

A new program will enable 20 countries at risk to put together contingency plans for climate change.