"America and India will unveil joint efforts to fight climate change when Barack Obama visits New Delhi next month, as the US tries to keep up the momentum of international negotiations."

"Hotter days mean less cold cash for Americans, according to a new study matching 40 years of temperatures to economics."

"LIMA -- About 190 nations agreed on Sunday the building blocks of a new-style global deal due in 2015 to combat climate change amid warnings that far tougher action will be needed to limit increases in global temperatures."

"Better protecting the world's fast-disappearing mangroves could have big economic, social and environmental benefits, experts said at the U.N. climate talks in Lima this week."

Pope Francis told the Lima climate conference that they had a "serious ethical and moral responsibility" to the poor and future generations.

"U.S. Secretary of State John Kerry made an impassioned plea [Dec. 11] for all nations to work for an ambitious U.N. deal next year to fight climate change, saying time was running out to reverse a course 'leading to tragedy'."

"LIMA, Peru -- A funny thing happened on the way to a 2015 climate deal: The wall dividing developed and developing countries crumbled."

"A new peer-reviewed analysis of sources of leaks in natural gas drilling and well operations strongly bolsters growing calls for the Environmental Protection Agency to settle on regulations cutting wasteful, harmful emissions of methane from both new and existing oil and natural gas wells."

"A slight increase in air temperature over the past half-century has caused waters to warm more than two degrees in tributaries to the Chesapeake Bay, a change that could reduce the expected benefits of the multibillion-dollar bay cleanup plan and eventually alter the behaviors of marine animals, a new study says."