"Significant progress was made last year in strengthening nuclear safety around the world, the U.N. atomic watchdog said in its annual review, despite the 'challenge' posed by a large number of ageing reactors."

"The World Bank's board on Tuesday agreed to a new energy strategy that will limit financing of coal-fired power plants to 'rare circumstances,' as the Washington-based global development powerhouse seeks to address the impact of climate change."

"Reports from a landmark meeting to debate protections for Antarctic wildlife suggest that Russia has stalled U.S. and European initiatives to establish no-kill zones in the Southern Ocean."

BERLIN -- Sea levels could rise by 2.3 metres for each degree Celsius that global temperatures increase and they will remain high for centuries to come, according to a new study by the leading climate research institute, released on Monday."

"Tokyo Electric Power Co. has started taking measures to contain highly radioactive groundwater at the Fukushima No. 1 nuclear plant, but its strategy is based on a theory that is disputed by industry experts."

"The area of ocean set aside as a nature preserve could double or triple in the coming days, depending on the outcome of a meeting in Germany. Representatives from 24 countries and the European Union are considering setting aside large portions of ocean around Antarctica as a protected area. And the deal may hinge on preserving some fishing rights."

"Six activists climb Europe's tallest building in a protest against oil and gas drilling the Arctic."

"Major earthquakes thousands of miles away can trigger reflex quakes in areas where fluids have been injected into the ground from fracking and other industrial operations, according to a study published in the journal Science on Thursday."

"Japan's nuclear regulator says radioactive water from the crippled Fukushima power plant is probably leaking into the Pacific Ocean, a problem long suspected by experts but denied by the plant's operator."

"The United States and China, the world's top emitters of greenhouse gases, agreed to five initiatives on Wednesday to cut carbon output from the largest sources, including heavy duty vehicles, manufacturing and coal-fired plants, the State Department said."