The prolific Rockwell takes on the controversial subject of global warming in this effective entry in the Let\’s-Read-and-Find-Out series. The book begins by introducing Earth as a remarkable place that may be the only spot where conditions are right for life.^B She goes on to explain in simple language the greenhouse effect, the sources of global warming, what the effects of warming have been so far and what they might be in the future. Some solutions are also offered, good ideas like planting trees, riding bikes instead of driving, and buying foods that aren\’t prepackaged. Global warming criticism gets about a half page of rebuttal, but Rockwell notes, even if the critics are right, it is still a good idea to try to stop the increase of greenhouse gasses. The ink-and-watercolor art, brimming with action, has a lightness the subject belies, but it adds child appeal. A final two-page spread offers some activities to extend the text.