tennessee. it's just amazing that we just can't break this heat wave. it's literally going to take probably a big tropical storm or hurricane to do that, and there's nothing on the way for at least another week. >> okay. well, thanks for taking a look out there for us. bill karins. biologists say they're concerned about the health of a 40 foot great whale that stuck in a northern california river. the whale that swam three miles up the river inland with her 15 foot baby a month ago, that baby whale has since returned to the ocean. biologists have used dozens of methods to lure the whale back, but apparently it won't go, so they're hoping that a need for food will get her to head back to the salt water of the sea. taking politicians at face value. ae new m.i.t. study shows voters who watch a lot of television but don't really know much about political candidates besides how they look are most likely to be influenced by physical appearance. the size of that effect is about the same as the influence of income beensy, but it dmrishz as voter information levels increase. i'm joined now by nick rangone,