The Caretaker Trilogy is a series of science fiction thrillers with an ecological theme, written for young adults by David Klass. The first book in the series, Firestorm (2006), was the first book ever endorsed by Greenpeace and was praised by critics for its combination of entertainment value and environmental message, garnering an American Library Association (ALA) Best Book citation, a starred review from Publishers Weekly, and a favorable review by the New York Times Book Review. The story focuses on Jack Danielson, a teenager sent back from the future to save the world's oceans. Whirlwind, the second book in the Caretaker Trilogy, tells the story of Jack's efforts to save the Amazon rainforest; published in March 2008 by Farrar, Straus and Giroux. The third book in the trilogy is Timelock, published in 2009. Firestorm has been optioned by Warner Bros. and the production company Thunder Road. Source: Wikipedia (en)