"The Keystone XL pipeline faces a new, formidable and deep-pocketed foe: Tom Steyer, a California billionaire, has targeted the controversial Canadian project to funnel Alberta’s landlocked heavy crude to Texas refineries on the Gulf Coast."

"Even as a Red Tide algae bloom is wiping out a record number of manatees in southwest Florida, a mysterious ailment is killing dozens more manatees on the state's east coast. So far, state biologists have been unable to pinpoint the cause."

"SAN FRANCISCO – For centuries, men like Larry Collins, a garrulous crab and sole fisherman, were free to harvest the seas. But sweeping across the globe is a system that slowly and steadily hands over a $400 billion ocean fishing industry to corporations. The system, called catch shares, in most cases favors large fishing fleets, a review of the systems operating across the United States shows."

"The U.S. drinking water and sewage infrastructure earned a barely passing grade of D from the American Society of Civil Engineers today, which said at least $1 trillion is needed to fix the problem."

"WASHINGTON -- The Senate Energy and Natural Resources Committee will vote Thursday on Sally Jewell’s nomination as Interior secretary. The vote comes two weeks after the REI chief executive’s sometimes-pointed confirmation hearing before the committee’s 12 Democrats and 10 Republicans."

"Transocean's chief executive testified Tuesday during the BP oil spill civil suit in New Orleans that employees should have done more to detect signs of trouble before the company's drilling rig exploded in the Gulf of Mexico in 2010."

"MACON, Mo. — Five years ago, rural America was giddy for ethanol."

Powerful Atlantic storms threaten long-settled areas on a Massachusetts barrier island.

"COLUMBIA, SC -- As SCE&G and other utilities work to complete atomic power plants, the law that made construction possible gives power companies less incentive to use solar, wind and other forms of alternative energy."

"TOKYO -- A power failure at Japan’s tsunami-damaged nuclear plant on Monday night has left three fuel storage pools without fresh cooling water for hours, the plant’s operator said."

"The inside story of how the government let one company squash biotech innovation, and dominate an entire industry."

"The number of Atlantic storms with magnitude similar to killer Hurricane Katrina, which devastated the U.S. Gulf Coast in 2005, could rise sharply this century, environmental researchers reported on Monday."

"The American Bird Conservancy is calling for a ban on using one of the globe's most widely used classes of insecticides in seed treatments and for a suspension of all other uses, pending an independent review of its impact on birds and other wildlife."

"Missouri Republican Sen. Roy Blunt said on Monday that he is placing a hold on Gina McCarthy, President Obama’s pick to run the Environmental Protection Agency, which could delay a full Senate vote on the nominee."

"An underground plume of toxic hydrocarbons from an oil spill north of the Colorado River near Parachute has been spreading for 10 days, threatening to contaminate spring runoff."