The basic gist of this story from Forbes that notoriously soft-hearted bastion of PC-liberalism is Drive More, Exercise Less, Get Fat.
When cities spread out, so do waistlines and rear ends. For proof, you can visit Charleston, W.Va., or Fort Wayne, Ind.--the U.S. cities with the highest obesity rates, both with less than 3,000 people per square mile. Or you can refer to recent studies published in the American Journal of Public Health and the American Journal of Health Promotion.
I visited New Zealand a few years ago. I returned via Los Angeles, deplaned and was walking down the airport corridor when I simply started to laugh. Especially by comparison with New Zealanders, I felt as if I was walking through a world populated by people out of paintings by Botero.