Map of Antarctica showing the estimated average temperature change per decade (°C) from 1957 to 2006, from the Pew Center report
The Pew Center on Global Climate Change has released Key Scientific Developments Since the IPCC Fourth Assessment Report, summarizing some of the key findings of a significant
body of new peer-reviewed science since the 2007 release of the report. A report by Australia's James Cook University, Expansion of the tropics: evidence and implications, indicates through a review of scientific literature that the tropical zone is increasing. You can access the publications online, and IPCC reports in HOORC's Library.