For more information about ice and climate change:

Intergovernmental Panel on Climate Change
National Snow and Ice Data Center
The Cryosphere Today
NASA Global Climate Change
NOAA National Climatic Data Center
Pew Center on Global Climate Change
Union of Concerned Scientists

other books by henry pollack and his son john pollack:

Uncertain Science...Uncertain World, by Henry Pollack
Cork Boat, by John Pollack