"Nations and individuals have a duty to reduce greenhouse gas emissions and enact policies that mitigate global warming, said a Vatican-sponsored working group."

"Renewable energy could meet nearly 80 percent of the world's energy needs by mid-century and play a crucial role in fighting global warming, the UN's climate scientists said Monday in a major report."

"The Fukushima Daiichi nuclear accident exposed flaws in the Japanese government's measures to guard the country's reactors against earthquakes and tsunamis. U.S. officials in recent years also have worried that Japanese officials haven't taken enough precautions to protect the facilities from terrorist attacks, according to diplomatic documents released over the weekend on the WikiLeaks website."

"Denmark earns the biggest share of its national revenue from producing windmills and other clean technologies, the United States is rapidly expanding its clean-tech sector, but no country can match China's pace of growth, according to a new report obtained by The Associated Press."

"Levels of radioactive substances have jumped in the Pacific seabed off Japan near the nuclear power plant crippled by a massive tsunami in March, according to the plant operator."

"Environmentalists trying to halt U.S. uranium projects are emphasizing the foreign ownership of mining companies. A key issue: Companies that mine uranium and other hardrock minerals do not pay royalties to the U.S. government. Several companies that mine or are seeking permits to mine U.S. uranium are based in Canada."

"Representatives from 127 governments have agreed to add endosulfan to the United Nations' list of persistent organic pollutants to be eliminated worldwide. The action puts the widely-used pesticide on track for elimination from the global market by 2012."

"Workers entered a damaged reactor building at Japan's Fukushima Daiichi nuclear plant on Thursday for the first time since explosions crippled the plant two months ago. The plant's operator, Tokyo Electric Power, said the workers were attempting to install a ventilator to help lower radiation levels inside the reactor building."

"Less than a week after the wedding of his son William to Kate Middleton, Prince Charles was in Washington on Wednesday to, among other things, speak at a Georgetown University conference on the future of food and sustainable agriculture, a pet issue of his for nearly 30 years."