"The chances have increased over the past month that the much-feared El Nino phenomenon, which has the potential to wreak havoc on global crops, would strike by summer in the Northern Hemisphere, the federal U.S. weather forecaster said Thursday."

"The amount of carbon dioxide in the Earth's atmosphere has exceeded 402 parts per million (ppm) during the past two days of observations, which is higher than at any time in at least the past 800,000 years, according to readings from monitoring equipment on a mountaintop in Hawaii. Carbon dioxide, or CO2, is the most important long-lived greenhouse gas responsible for manmade global warming, and it is building up in the atmosphere due to the burning of fossil fuels such as coal, oil and natural gas."

"Despite a late-season boost from the cold weather patterns similar to those that blasted England with terrific storms in February, Arctic sea ice is still on a long-term decline, according to the National Snow and Ice Data Center."

"SAN DIEGO – Nearly 80 U.S. sailors are seeking $1 billion from Tokyo Electric Power Co., operator of the Fukushima No. 1 nuclear power plant, alleging the company lied about the high level of radiation in the area where they were carrying out a humanitarian mission following a tsunami that touched off a nuclear crisis three years ago."

"The World Bank is still failing to take climate change into account as it makes decisions about the projects it finances, according to a new report from the nonprofit World Resources Institute. The impacts of climate change were only taken into consideration in a quarter of all projects the bank approved between January 2012 and June 2013."

"World powers are running out of time to slash their use of high-polluting fossil fuels and stay below agreed limits on global warming, a draft U.N. study to be approved this week shows."

"In February 2013, the journal Frontiers in Psychology published a peer-reviewed paper which found that people who reject climate science are more likely to believe in conspiracy theories. Predictably enough, those people didn’t like it."

"Jim Yong Kim urges campaigners and scientists to work together to form a coherent plan in the fight against climate change."

The U.N.'s climate chief called on the oil and gas industry on Thursday to make a drastic shift to a clean, low-carbon future or risk having to leave three-quarters of fossil fuel reserves in the ground."

"MOSCOW — Even as American and Russian diplomats groped toward a settlement that would halt further Russian military intervention in Ukraine, Gazprom, the Russian energy company, stepped up the economic pressure on Tuesday by sharply raising the price it charges for natural gas."