Two Republican challengers to incumbent California Gov. Jerry Brown say that the state's government failed to properly prepare for what they call a forseeable drought crisis.
Former New York mayor Michael Bloomberg has been chosen by Secretary-General Ban Ki-moon to be the U.N. special envoy for cities and climate change.
We already waste billions on pointless gestures that make people think we're addressing global warming, but the earth doesn't notice or care.
Saying the government should lead by example, President Barack Obama is ordering the federal government to nearly triple its use of renewable sources for electricity by 2020.
The United States is spewing 50 percent more methane -- a potent heat-trapping gas -- than the federal government estimates, a new comprehensive scientific study says. Guess where it comes from?
The United Nations-administered cap-and-trade system for reducing greenhouse gases is sitting on a cash hoard of close to $200 million, even as it warns of hard times ahead that could impede its...