DESERT SURVIVAL SKILLS
'(<a href="http://www.j-archive.com/media/2007-12-20_DJ_30.jpg" target="_blank">Jon of the Clue Crew reports from White Sands National Monument, New Mexico.</a>)  Sounds odd, but black tea bags are handy in the desert: steep the bags & apply to sunburn; this acid in the tea relieves heat, pain & itching'
tannin (or tannic acid)