"Two of the most well-known penguin species in Antarctica -- chinstraps and Adelies -- are under pressure because a warmer climate has cut deeply into their main food source, shrimp-like creatures called krill."

"New Jersey Governor Chris Christie is re-evaluating the state's participation in a regional carbon trading program and could opt to withdraw within a few weeks. Observers say the move is expected in response to pressure from GOP legislators and campaigns mounted by groups funded by billionaires Charles G. and David H. Koch."

"Indoor marijuana cultivation consumes enough electricity to power 2 million average-sized U.S. homes, which corresponds to about 1 percent of national power consumption, according to a study by a staff scientist at the Lawrence Berkeley National Laboratory."

"Extracting natural gas from shale formations using hydraulic fracturing generates more greenhouse-gas emissions than burning coal, according to a new study that drew immediate attacks from oil and gas interests already facing pressure from lawmakers and regulators worried about the environmental effects of shale-gas development."

"Dozens of large-scale clean energy projects could be derailed if a measure to defund a federal loan guarantee program becomes part of a final Congressional budget deal."

"Rich and poor nations overcame deep divisions on Friday to cut a deal that maps out U.N. climate negotiations for 2011, building on last December's agreement in Mexico and hardening the focus on tougher issues."

"The House of Representatives passed legislation on Thursday that would stop the Environmental Protection Agency from regulating emissions of gases blamed for warming the planet, a day after the Senate rejected similar legislation."

"A new study confirms that the ocean has been rising in fits and starts since the 19th century -- and that the rate appears to have accelerated in the early 1990s to almost twice the rate of increase that prevailed through most of the 20th century."