"The Obama administration is inching ahead with a plan that would allow wastewater from fracking to be shipped on barges, fueling a debate whether it is safer than other transportation modes or risks polluting drinking water."

"A federal agency has declared that more sick and dying sea lion pups have stranded themselves on southern California beaches so far in 2013 than in the previous five years combined, but scientists are still unsure what is afflicting the mammals."

"LITTLE ROCK, Ark. -- Federal pipeline safety officials on Tuesday issued a corrective action order to ExxonMobil Pipeline Co. after one of its pipelines ruptured last week in central Arkansas."

"The so-called 'Monsanto Protection Act,' a controversial provision protecting the biotech giant from litigation, has found an unusual critic in the tea party."

"A coalition of environmental groups wants air-quality officials to determine if the refining of heavy Canadian crude has an effect on local health and safety."

"YAKIMA, Wash. -- Underground tanks that hold a stew of toxic, radioactive waste at the nation's most contaminated nuclear site pose a possible risk of explosion, a nuclear safety board said in advance of confirmation hearings for the next leader of the Energy Department."

"GRANTS PASS, Ore. -- The last partner has dropped out of a proposal to ship coal from Montana and Wyoming to Asia through Oregon's Port of Coos Bay, port officials announced Monday."

"WASHINGTON -- The Environmental Protection Agency's latest proposed tightening of limits on sulfur in gasoline, and its previous rules, will most likely have the perverse consequence of retarding the development of cars running on batteries, advanced biofuels or hydrogen -- all promising but expensive technologies that have not become mass-market products."

"DENVER -- Authorities are investigating after construction crews discovered a problem with a liquid gas pipeline that allowed a carcinogen to seep into the ground near a large creek that feeds into the Colorado River."

"The first crossing of the United States by a solar-powered plane is expected to start in just over a month, its creators said on Thursday, as they make final preparations for an attempt two years from now at the first round-the-world flight without any fuel."

"James E. Hansen, the climate scientist who issued the clearest warning of the 20th century about the dangers of global warming, will retire from NASA this week, giving himself more freedom to pursue political and legal efforts to limit greenhouse gases."

"WASHINGTON -- The U.S. Supreme Court on Monday rejected a challenge by the oil lobby disputing a U.S. Environmental Protection Agency air pollution rule."

"MAYFLOWER, Ark. -- An ExxonMobil pipeline carrying tar sands oil from Canada broke open in Arkansas on Friday, spilling thousands of gallons of black diluted bitumen into residential streets outside Little Rock and forcing the evacuation of 22 homes."

"These are good times for Libbey, a 125-year-old American glassmaker that nearly went bankrupt four years ago. The company’s shares have risen to almost $20 from below $1, sales of its tableware are at a record high, and its energy-intensive factories saved more than $5 million in 2012 as natural gas prices fell."

"A federal jury on Thursday found Tonawanda Coke Corp, accused of years of illegal air pollution, guilty of violating federal clean air regulations and found its environmental manager guilty of hiding plant deficiencies from U.S. regulators."