when the grown-ups are getting it all wrong? the book? "the lorax," the ultimate dr. seuss environmental hero. the only voice who "speaks for the trees," as a greedy factory owner chops down every truffala tree in the forest. >> l-o-r-a-x. >> reporter: when the kids found out the book was going to be a movie, they then checked out the movie's website. and the kids didn't see the lorax speaking out about anything but tickets and online games. not one mention of the environment. no one speaking for those trees. >> we are the changers, the changers that said we speak for the trees. >> reporter: the internet can be a wonderful thing. >> the petition is going crazy. >> reporter: the kids put a petition on change.org. the same site that helped molly katchpole bring an end to those new bank fees at bank of america, and helped draw hillary clinton's attention to the plight of women drivers in saudi arabia. how amazing is that for you?