"SYDNEY — China is rapidly assuming a global leadership role on climate change alongside the United States, a new study said Monday, but it warned greenhouse gas emissions worldwide continue to rise strongly."

"PITTSBURGH -- The Environmental Protection Agency has dramatically lowered its estimate of how much of a potent heat-trapping gas leaks during natural gas production, in a shift with major implications for a debate that has divided environmentalists: Does the recent boom in fracking help or hurt the fight against climate change?"

"The campaign group formed to support Barack Obama's political agenda has launched an initiative to shame members of Congress who deny the science behind climate change."

"HATCH, N.M. -- In southern New Mexico, the mighty Rio Grande has gone dry -- reduced to a sandy wash winding from this chile farming community to the nation's leading pecan-producing county. Only puddles remain, leaving gangs of carp to huddle together in a desperate effort to avoid the fate of thousands of freshwater clams, their shells empty and broken on the river bottom."

"CLEARWATER -- Despite warnings from scientists, rising sea levels still seem little more than a distant, imperceptible threat, a phenomenon whose change is measured in centimeters over decades."