Ben & Jerry Are Out To Get You

We know ice cream's role in the obesity epidemic, but do you know its impact on the environment?
Ben & Jerry's ice cream might be even more sinister: A gallon of it requires electricity-guzzling refrigeration and four gallons of milk produced by cows that simultaneously produce eight gallons of manure and flatulence with eight gallons of methane. The cows do this while consuming lots of grain and hay, which are cultivated by using tractor fuel, chemical fertilizers, herbicides and insecticides, and transported by fuel-consuming trains and trucks.
Heh. George Will calculates this and other Fuzzy Climate Math. My favorite:
The Prius hybrid is, of course, fuel-efficient. There are, however, environmental costs to mining and smelting (in Canada) 1,000 tons a year of zinc for the battery powered second motor, and the shipping of the zinc 10,000 miles -- trailing a cloud of carbon dioxide -- to Wales for refining and then to China for turning it into the component that is then sent to a battery factory in Japan.
Opinions differ as to whether acid rain from the Canadian mining and smelting operation is killing vegetation that once absorbed carbon dioxide.