July 20, 2011
The Associated Press . Josh Kroes sits in a lawn chair under a shade tree in Racine, Wis., on Wednesday evening. Kroes took a T-shirt, soaked it in water and froze it for about five minutes.
Stories this photo appears in:
CHICAGO -- If the extreme heat and humidity lingering over much of the nation feels like a steam bath, it's because the same principles are at work in the atmosphere.