Dawn Saves the Planet — Ann M. Martin

Dawn thinks studying ecology is so cool. For a science project, she and Stacey are even teaching an ecology class to some of their baby-sitting charges. It's fun to get kids excited about cleaning up the earth.

But Dawn isn't through yet. She wants to start a recycling center at SMS. The Baby-sitters and most of the students are all for it, but Dawn needs a lot of help. And lately she's been so busy lecturing people about being environmentally responsible that no one can stand being around her!

Poor Dawn. She's trying to do a good thing -- but she's driving everyone crazy!