April 24, 2007 — It all started with a joke. Wrapping up a nationwide global warming tour, singer-songwriter Sheryl Crow posted a quirky "solution" online about a new way to save the environment. She wrote: "I propose a limitation be put on how many squares of toilet paper can be used in any one sitting." She told the joke to get people's attention, and it worked. Talk show hosts had a field day with Crow's comments. "Have you seen my [backside]?" Rosie O'Donnell joked on "The View." "It seemed like Sheryl was trying to be a little bit cheeky, no...