Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Global warming
| • The global warming average air temperature has increased by 1.0±0.3°F (0.6±0.2°C) since the late 19th century |
|
| • The average surface temperature of the earth is likely to increase by 2 to 11.5°F (1.1-6.4°C) by the end of the 21st century |
|
| • The average rate of warming over each inhabited continent is very likely to be at least twice as large as that experienced during 20th century |
Working Group I Report of the Intergovernmental Panel on Climate Change (IPCC) 2007.
