"The European Union's trade authority plans to start an investigation into whether U.S. bioethanol exporters are receiving unfair state subsidies and selling their fuel to Europe at illegally low prices, diplomats said on Tuesday."

"Even clouds can suffer from inhaling air pollution, a new study finds, resulting in extreme rainfall patterns that appear to be altering climate across the globe."

The bankruptcy of the solar firm Solyndra has focused a lot of attention -- some of it politicized -- on clean-energy subsidies. While those subsidies have sparked something of a "gold rush" among clean-energy entrepreneurs, some clean-energy startups face serious economic challenges that may justify them.

"A new and broader climate deal is out of reach for now and instead nations need to focus on how to replace the ailing Kyoto Protocol before 2020, Britain's minister of state for energy and climate change said on Monday."

"Researchers found a six-fold increase in the risk of developing Parkinson's in individuals exposed in the workplace to trichloroethylene (TCE)."

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"France's state energy firm EDF has been fined €1.5m by a Paris court for spying on Greenpeace."

"HONG KONG — The United States and China are gearing up for a trade war that could catch American users of solar energy in the crossfire."

"A species of Himalayan yew tree that is used to produce Taxol, a chemotherapy drug to treat cancer, is being pushed to the brink of extinction by over-harvesting for medicinal use and collection for fuel, scientists warned on Thursday."

"PARIS — The International Energy Agency warned Wednesday that the world is hurtling toward irreversible climate change and will lose the chance to limit warming if it doesn’t take bold action in the next five years."

"A black asteroid as big as an aircraft carrier zoomed past Earth on Tuesday, delighting astronomers who trained telescopes on the ancient body in hopes of learning more about its composition and origin."