Understanding The Effects Of Heat
Hot weather is only going to get more and more likely, so understanding the effects of heat on your body and things you can do to cope will be important. Here is an article about Phoenix's problem with the growth of heat related deaths.
also of interest, how do you deal with heat when your employer makes you work in dangerous situations?
I'm lucky, my employer provides bottles of Gatorade and frozen Popsicle when its hot. Not many are.