Climate

Researchers at Columbia Engineering and Georgia Institute of Technology have published a study in the February 4 online Early Edition of Proceedings of the National Academy of Sciences (PNAS) showing—for the first time—that certain volatile organic gases can promote cloud formatio

The National Oceanic and Atmospheric Administration officially designated 2012 as the warmest year on record for the contiguous United States. This isn't too surprising for a year that already had the warmest spring, the second warmest summer and fourth warmest winter.

Solomon led efforts to identify the cause of the ozone hole over Antarctica.

An American atmospheric chemist who led efforts to identify the cause of the Antarctic ozone hole and a French geochemist who extracted the longest-yet climate record from polar ice cores have won the prestigious 2012 Vetlesen Prize.

Columbia’s campuses were largely spared the ravages of Hurricane Sandy, which destroyed neighborhoods, flooded tunnels, forced hospitals evacuations and knocked out power to millions throughout the region. But many in the tri-state area face a challenging path to recovery.

Researchers lower plankton-sampling nets into northern waters. (Beth Stauffer/Lamont-Doherty Earth Observatory)

Researchers See Natural Cycle; But Questions Arise on Climate Change

Eliminating leaks from energy-producing facilities would remove large amounts of the greenhouse gas methane from the air. Here, natural gas explodes from a pipe in Middletown, Conn., January 2010
(U.S. Chemical Safety Board)

Reducing Soot and Methane Would Bring Fast Results, Says Study

Street flooding that occurred during Hurricane Irene could become more common in the decades ahead.
Credit: Reuters

In the first statewide climate change outlook for New York, scientists say that the state may suffer disproportionate effects in coming decades compared with other regions, due

Researchers have traveled to the Alaskan treeline repeatedly. Lamont tree-ring scientist Kevin Anchukaitis (left) and Fairbanks arctic ecologist Angela Allen sample a dead spruce. Credit: Lamont-Doherty

Evergreen trees at the edge of Alaska’s tundra are growing faster, suggesting that at least some forests may be adapting to a rapidly warming climate, says

Health costs exceeding $14 billion dollars and involving 21,000 emergency room visits, nea

The long war leading to South Sudan's recent independence began during the powerful El Niño drought of 1983. In continuing hostilities, southern fighters display a grenade launcher captured from northern Sudanese, July 2011.
(Trevor Snapp/Global Post)

In the first study of its kind, researchers have linked a natural global climate cycle to periodic increases in warfare.

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