"Fuel stations throughout the country will be able to sell gasoline blended with 15% ethanol during the summer under an emergency waiver issued Friday by the Environmental Protection Agency in a move that could reduce prices at the pump and boost demand for the Midwest-based ethanol industry."

"To preserve habitat for fish and benefits for humans, some scientists suggest we need to explore the need for assisted migration."

"Since almost two centuries ago—not long after it was identified bubbling up in a creek in western New York—the flammable below-ground substance composed of methane and other hydrocarbons has been called "natural gas" in the U.S. Now, some environmental activists say it's time to ditch that label."

"More than a month after heavy storms eroded a section of the Los Angeles Aqueduct, work crews are still scrambling to complete repairs and shore up flood defenses in the face of a weeklong heat wave that threatens to trigger widespread snowmelt in the Sierra Nevada."

"All barge traffic will be halted across a wide swath of the Upper Mississippi River for weeks, the U.S. Department of Agriculture said Thursday, as record winter snowfall in the upper Midwest is now melting and flooding into waterways."

"In Congress, there is sudden bipartisan momentum to reinstitute tariffs on Chinese components. The U.S. solar industry is alarmed."

"The League of Conservation Voters and Climate Power said Thursday it would run attack ads against five Republicans who voted to repeal tax credits for renewable energy as part of the GOP debt limit bill."

"House Democrats on Thursday released their permitting reform proposal after House Republicans advanced an energy bill that included measures aimed at streamlining the approval process for projects."

"East Africa’s worst drought in at least 40 years, which has displaced more than a million people and pushed millions more to the brink of famine, would not have happened if not for human-caused climate change, a network of extreme-weather scientists said Thursday."

"Good news: California has a near-record snowpack in the Sierra, which could ease the impact of our deep drought. Bad news: There’s a heat wave coming this week. Really bad news: If the snow melts too fast, it could help cause devastating floods in the Central Valley."