内容简介：
The story begins in June 2223 when a space ship from a distant planet lands on earth. It is a world of swirling winds, excessive temperatures, and constant storms. The crew soon discovers that the arid earth has spawned horrible worms that roam the globe. There are no humans to be found A tape is discovered which describes the attempts of three brave people of 2100 to save the earth from the effects of global warming and the devastation of nuclear war. Alex and Rebekka, a robot, plan to return to the world of 2003 to influence a noted environmental scientist, Dr. Peter O Day, to alter his negative opinion of global warming in an effort to avert the devastation of the earth.