Smokin' Hot - How long will it take to convince you?
Temperature of Earth is at a 2000-year high, at least according to the National Academy of Sciences...
In summary, large-scale surface temperature reconstructions are proving to be important tools in our understanding of global climate change. They contribute evidence that allows us to say, with a high level of confi dence, that global mean surface temperature was higher during the last few decades of the 20th century than during any comparable period during the preceding four centuries.