Walking to the store might be worse for the planet than driving?
Although this one seems obvious to me:
The climate could benefit if people avoided exercise, ate less and became couch potatoes. Provided, of course, they remembered to switch off the TV rather than leaving it on standby.
Well, yeah. When we all die from lethargy-induced diabetes or heart failure, the sheer fact of fewer humans would benefit the planet rather nicely, I suppose. Maybe that explains America's high obesity rates: a secret plan to combat global warming!
More seriously, the point of the article is how awful our food-production system in the west really is: food is so energy-intense (read: petroleum-intense) that you're better off putting the gas straight in to your gas tank for basic mobility.