"Oil fell to a seven-month low below $91 a barrel Wednesday after Iran agreed to allow the U.N. nuclear agency to restart an investigation into the country's nuclear program."

"One of Canada's top experts on Arctic issues is warning of the 'near-inevitability' of an Exxon Valdez-scale oil spill at a fragile choke point in Alaskan waters if Canada ends up shipping oilsands fuel to China via pipeline terminals on the British Columbia coast."

"It seems to have gone virtually unnoticed, but the world leaders at the weekend's G8 summit look as if they have taken the biggest step in years in tackling climate change. And it's quite apart from anything to do with carbon dioxide."

"Climate change, with its associated melting ice caps and shrinking glaciers, is the usual suspect when it comes to explaining rising sea levels. But a recent study now shows that human water use has a major impact on sea-level change that has been overlooked."

"The United States on Thursday announced the imposition of antidumping tariffs of more than 31 percent on solar panels from China. The move by the Commerce Department is certain to infuriate Chinese officials already upset after recent bilateral frictions over China’s human rights policies and its increasingly confrontational approach toward American allies like the Philippines and Japan."

"LONDON -- Malaria-carrying mosquitoes in Africa and India are becoming resistant to insecticides, putting millions of lives at greater risk and threatening eradication efforts, health experts said on Tuesday."

"BRUSSELS -- Airlines flying to and from European airports have complied with the EU Emissions Trading Scheme and reported their greenhouse gas emissions data, except for the refusal of aircraft operators from China and India."

"Biodiversity has decreased by an average of 28 percent globally since 1970 and the world would have to be 50 percent bigger to have enough land and forests to provide for current levels of consumption and carbon emissions, conservation group WWF said on Tuesday."

"As climate change transforms their habitat, some animals are already on the move. But a new analysis from the University of Washington warns that many species won't be able to run fast enough to survive a warming world."