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.
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)
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
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)