I thought this was pretty good:
Rush Limbaugh: This is a flat-out joke. Of course there's too little milk, and there's not enough sunshine and exercise, because cows -- we have been told for how many years -- cause global warming, and we've gotta get rid of cows. Exercise makes us exhale carbon dioxide. Sun gives us skin cancer!" So we're telling the kids, "It's immoral to drink milk because cows and methane cause global warming. Exercise is not really all that necessary because you put more carbon dioxide out there than you otherwise would, and the sun causes cancer." Now, after telling us to avoid all of these "dangers," now they're saying avoiding all these dangers is creating the possibility of rickets in kids.
http://www.rushlimbaugh.com/home/daily/site_112707/content/01125104.guest.html
Walking to the shops ‘damages planet more than going by car’
August 4, 2007
Walking does more than driving to cause global warming, a leading environmentalist has calculated.
Food production is now so energy-intensive that more carbon is emitted providing a person with enough calories to walk to the shops than a car would emit over the same distance. The climate could benefit if people avoided exercise, ate less and became couch potatoes...
...What if, instead of beef, the walker drank a glass of milk? The average person would need to drink 420ml – three quarters of a pint – to recover the calories used in the walk. Modern dairy farming emits the equivalent of 1.2kg of CO2 to produce the milk, still more pollution than the car journey.
Cattle farming is notorious for its perceived damage to the environment, based on what scientists politely call “methane production” from cows. The gas, released during the digestive process, is 21 times more harmful than CO2...
http://www.timesonline.co.uk/tol/news/uk/science/article2195538.ece