[crazikev]

I think the obesity problem is diretly related to Air conditioning, Where in the winter people normaly fatten up a bit, like bears do for hibernation. But if its winter all year around, like in A/C, like said above, sweat = weight loss, if your in A/C all day you'll never sweat.
And the more A/C there is the more power used, the higher the electricity bill, the more the power plants have to run at higher capacity, which means more maintenance, which also means the more polution from gas and coal powerplants, the more the air gets poluted and so on an so forth, all for a couple degrees cooler