In this haunting fable about the dangers of destroying ourforests and woodlands, the long-suffering Lorax struggles to saveall the Truffula Trees from the wicked Once-ler's axe. With hisunique combination of hilarious stories, zany pictures and riotousrhymes, Dr. Seuss has been delighting young children and helpingthem learn to read for over fifty years. Creator of the wonderfullyanarchic Cat in the Hat, and ranking among the UK's top tenfavourite children's authors, Seuss is firmly established as aglobal best-seller, with nearly half a million books soldworldwide. This delightful book forms part of the third stage inHarperCollins' major Dr. Seuss rebrand programme. With the relaunchof six more titles in January 2004, such all-time favourites as TheLorax, The Foot Book and Yertle the Turtle boast bright new coversthat incorporate much needed guidance on reading levels: Blue BackBooks are for parents to share with young children, Green BackBooks are for budding readers to tackle on their own, and YellowBack Books are for older, more fluent readers to enjoy. The Loraxbelongs to the Yellow Back Book range.

在本套图书中，一共20本，分为蓝色、绿色和黄色三个种类。
蓝色系列共5本，面向低龄儿童，以亲子共读为主要形式，通过易记易诵的韵文和丰富多彩的画面帮助孩子认识单词，激发孩子的学习兴趣。
绿色系列共8本，专为有一定自行阅读能力的孩子量身定做。故事风趣生动，语言简洁明了，读起来朗朗上口，更有各种有趣的绕口令，让孩子在阅读初期，建立自信，爱上阅读。
黄色系列共7本，针对能够流利阅读的孩子设计，通过夸张滑稽的故事，让孩子懂得很多有意义的道理，鼓励孩子勇敢向前，寓教于乐。

《老雷斯》(The
Lorax)最早发表于1971年，书中的主人公老雷斯，爱树如命，本书也被视为人类对生存环境危机的一个寓言：故事描绘了一个叫文斯勒(Once-ler)的人,为了赚钱，将人间仙境变成了一片荒漠的故事。当文斯勒发现一个美丽的乐园，他不听老雷斯的警告，过度利用资源，还所有的树木砍来作无用之物。当生态破坏到了没有任何地方可供动物栖息时，乐园变成了无生气的沙漠。那么，人类是否曾想过当地球资源也被耗尽和污染的情境呢？希望藉此故事来唤醒人类来保护地球吧!