Scientists find more evidence that the planet is, on average, its warmest in 400 years:
A panel of top climate scientists told lawmakers that the Earth is heating up and that "human activities are responsible for much of the recent warming." Their 155-page report said average global surface temperatures in the Northern Hemisphere rose about 1 degree during the 20th century.
Overall, the panel agreed that the warming in the last few decades of the 20th century was unprecedented over the last 1,000 years, though relatively warm conditions persisted around the year 1000, followed by a "Little Ice Age" from about 1500 to 1850.
The President still doesn't believe there's a connection between human activities and global warming in much the same way that South African president Thabo Mbecki doesn't see the connection between HIV and AIDS.
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