survival tip: piss on your t-shirt to stay cool (no really)

i randomly happened on a new discovery channel tv series titled man vs. wild. bear grylls, a veteran of the british special forces who has climbed mount everst, spends an hour guiding viewers through some pretty hairy outdoor survival situations. during the first episode bear shows us how to manage a few days in the 120 degree moab, ut desert. we watch the guy climb up a slick rock chimney as well as create a bit of braincase air conditioning by wearing a piss-soaked t-shirt on this head - no joke. fridays 9p.m. et/pt.