The titles in this series are mainly new editions of titles in the Longman Simplified English Series. They are suitable for students at upper intermediate level, including those preparing for the Cambridge First Certificate. There is exercise material at the back of each book.
In the distant future, Harl and Ellen talk about their work and their lives. Their work as scientists is more important to them than love. Harl plans to leave Earth, on a long journey through space. Ellen plans to stay on Earth, to change the way the human mind works. When Harl returns to Earth, the world will be a very different place.
Three boys set out on a secret mission to penetrate the City of the Tripods and learn more about these strange beings that rule the earth. Sequel to "The White Mountains."