2011 Science News of the Year: Environment
Courtesy of Christopher Arp/USGS
Arctic warming signs
Climatologists pointing to the Arctic as the leading barometer of global change have plenty of new evidence that wholesale warming is under way. Observational data indicate that the region’s air, soils and water have warmed substantially since 2006, suggesting that the climate has established a “new normal” (SN Online: 12/2/11).