During the last few decades, average global temperatures and sea levels have risen and the ferocity of major storms and forest fires have increased. These changes deviate from climate trends over the last millenium or longer.
Glaciation in the Northern Hemisphere during the Wisconsin Ice Age about 20,000 years ago. Turquoise shading indicates the extent of the ice sheet about 3 km thick.
Bloom (2010) Global Climate Change: Convergence of Disciplines. Sinauer Associates.
Linking extreme heat events to global warmingLast Updated on 2012-08-07 at 19:13
An analysis by James Hansen and colleagues suggests that recent episodes of extremely warm summers, including the intense heat wave afflicting the U.S. Midwest this year,... More »
State of the Climate in 2011Last Updated on 2012-07-18 at 08:12
Worldwide, 2011 was the coolest year on record since 2008, yet temperatures remained above the 30 year average, according to the 2011 State of the Climate report released... More »
Greenland glaciers and rising sea levelLast Updated on 2012-05-10 at 13:28
Researchers determine that although glaciers continue to increase in velocity,
the rate at which they can dump ice into the ocean is limited.
Analysis of Speed of... More »