Prepare to be amazed at what passes for investigative journalism on television these days. Atlanta's WSB-TV Action News team ran a sensational iPod "nana" piece last night under the title "Man's Pants Catch Fire At Airport." To set the stage, WSB-TV says that the nano "uses the same technology as those troubled laptop batteries under recall due to the risk of fire." In steps Danny Williams -- mild mannered consumer, airport employee -- who claims that an iPod nana "burst into" chest-high flames while he was at work. So why isn't he covered in burns after exposure to such a serious chemical fire? After all, we've all watched the horrifying video of a lithium ion