OK. That's an exaggeration, but the Southern summer is still something to be reckoned with. I've concluded after 4 years here and the previous balance of my life in the cold white north that although working in extreme cold is even more unpleasant and painful than the extreme heat; the heat is nevertheless the more dangerous of the extremes. The cold will eventually chase you indoors unless you're an idiot, but the heat can damage you before you know it. Plus, it messes with the brain, making a serious error possible. What are your strategies?