Looking after Your World - A Book About Environment

"Meet Bo and Zop, two scouts from the Omega Quadrant, on a mission to monitor Earth. Their job is to find out all about us Earthlings, to see if we are friendly enough for a visit from the aliens of Omegatron. Bo doesn't think so - he doesn't seem to understand us at all! Can Zop show Bo what it means to be an Earthling?