“All I Wanna Do” songstress Sheryl Crow has recommended saving the environment by conserving toilet paper. Writing on her blog, the sunny SoCal girl says, “I think we are an industrious enough people that we can make it work with only one square per restroom visit, except, of course, on those pesky occasions where two to three could be required.” She also says “paper napkins . . . represent the height of wastefulness. I have designed a clothing line that has what’s called a ‘dining sleeve.’ The sleeve is detachable and can be replaced with another ‘dining sleeve,’ after usage.” Her third idea? A reality show where contestants compete to see who can lead the greenest life. She’s willing to put her body where her mouth is, too. At last night’s White House Correspondent’s dinner, Crow had words with rapping administration star Karl Rove about global warming. By most accounts, Rove was dismissive. The evening finished very uncomfortably when Crow reached out to touch Rove’s arm as he was making his way back to his table. He said, “Don’t touch me.” To which Crow responded, “You can’t speak to us like that, you work for us.” Rove offered this as a rejoinder: “I don’t work for you. I work for the American people.” All that makes us wonder . . . what are you doing to stop global warming?