"The United States pledged Thursday to cut its greenhouse gas emissions by 17 percent by 2020 from 2005 levels under an international climate agreement, though it made its commitment contingent on passing legislation at home."

"Climate change could more than triple the risk of catastrophic wildfires in parts of Australia, a top environmental group warned Thursday, almost a year since savage firestorms that killed 173 people."

"Talks on a landmark treaty to cut Cold War nuclear arsenals are nearly complete, U.S. President Barack Obama and his Russian counterpart Dmitry Medvedev agreed in a telephone call on Wednesday."

"The tourism industry could fund payments for ecosystem services to underwrite and insure its investments. And by harnessing private-sector investment, billions of dollars worth of vulnerable yet valuable marine and coastal ecosystems could avoid Cancun’s fate, says a growing group of governmental organizations, environmental groups and non-governmental organizations."

"Just a month after world leaders fashioned a tentative and nonbinding agreement at the climate change summit meeting in Copenhagen, the deal already appears at risk of coming undone, the top United Nations climate official warned... . "

"More than 40 sites across Iraq are contaminated with high levels or radiation and dioxins, with three decades of war and neglect having left environmental ruin in large parts of the country, an official Iraqi study has found."

"A new US assessment of Venezuela's oil reserves could give the country double the supplies of Saudi Arabia."

"A sister company to Toyota Motor Corp secured a lithium supply deal in Argentina on Wednesday that could help the world's largest automaker keep its lead in gasoline-electric hybrid cars."

"The decade ending in 2009 was the warmest on record, new surface temperature figures released Thursday by the National Aeronautics and Space Administration show."