"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."

"Current climate-induced drought is slipping into a trend that scientists say resembles some of the worst droughts in U.S. history, like the Dust Bowl."

"Toxic algae blooms in Lake Erie could come more often and be more intense in coming decades thanks in part to torrential rains intensified by global warming, according to a study published in Monday’s Proceedings of the National Academy of Sciences."

"Tesla sold more of its electric cars than expected in the first three months of the year, and it adjusts its first-quarter guidance to 'full profitability.'"

"SPRINGFIELD, Ill. -- Dominion Energy has agreed to pay a $3.4 million civil penalty and spend $9.75 million on environmental mitigation projects to resolve Clean Air Act violations at coal-fired power plants in three states."

"New Zealand's top climate change scientists have rallied together to slam a visiting sceptic who is touring the country to proclaim global warming as a myth that should be ignored."

"Exxon Mobil was working to clean up thousands of barrels of oil in Mayflower, Arkansas, after a pipeline carrying heavy Canadian crude ruptured, a major spill likely to stoke debate over transporting Canada's oil to the United States."

"The Washington State Department of Ecology has known since the 1990s that its water-pollution limits have meant some Washingtonians regularly consume dangerous amounts of toxic chemicals in fish from local waterways."

"STE. GENEVIEVE, Mo. -- Ameren Missouri has spent the past four years engaged in a bitter fight with Labadie-area residents over a proposal to pile millions of cubic yards of coal ash on a plot of cropland by the Missouri River."

"WASHINGTON -- The chemical pesticide lobby is waging a multi-million dollar battle to prevent regulation of chemicals linked to the dramatic escalation in the deaths of pollinating bees over the past year."