"Since summer, signs of severe food insecurity — droughts, food riots, five- to tenfold increases in produce costs — have erupted around the globe. Several new reports now argue that regionally catastrophic crop failures — largely due to heat stress — are signals that global warming may have begun outpacing the ability of farmers to adapt."

House Republicans will disband the special committee created by Speaker Nancy Pelosi to focus on climate change and energy independence.

"California regulators approved a pesticide Wednesday for use by fruit and vegetable growers despite heavy opposition from environmental and farmworker groups that cited its links to cancer."

"Old splits between rich and poor nations re-emerged on Tuesday over a plan to slow global warming, but both sides maintained a 'balanced package' is the goal of U.N. talks in Mexico."

"The Obama administration leaned heavily on Saudi Arabia to associate itself with the Copenhagen Accord climate change agreement, confidential State Department memos show."

"MEXICO CITY — President Felipe Calderon warned Monday that the globe is on the precipice of a tragedy if delegates at a U.N. climate change summit do not set differences aside and think of future generations."