January 10, 2007 -- The U.S. National Climate Data Center says 2006 was the warmest year ever recorded in the United States, and the sixth warmest worldwide.
The center said the average temperature in 2006 was 1.2 degrees Celsius above the 20th-century average.
Last week, Britain's Meteorological Office said this year is likely to be the hottest on record around the world, due to both greenhouse-gas emissions and El Nino, a phenomenon in the Pacific Ocean that can upset normal weather patterns.
Global Climate Change
View a photo gallery summarizing some key findings of the Stern report on the economic costs of global warming (epa)
THE STERN REPORT: In October, former World Bank chief economist Sir Nicholas Stern issued a 700-page report on the economic impact of global warming. The report, which was commissioned by the British government, estimates that climate change could cost between 5 and 20 percent of global GDP by the end of the century....(more)