Examines the many facets and puzzles of our Moon, including its phases and eclipses, its early discoveries and modern exploration, and its possible origins and future prospects.

An oppressed laborer on the planet of Florinia, Rik resigns himself to a life of hard work and the poor regard of people who believe him to be mentally impaired before he begins to recover memories of an imminent disaster.

The three laws of Robotics: 1) A robot may not injure a human being or, through inaction, allow a human being to come to harm 2) A robot must obey orders given to it by human beings except where such orders would conflict with the First Law. 3) A robot must protect its own existence as long as such protection does not conflict with the First or Second Law. With these three, simple directives, Isaac Asimov changed our perception of robots forever when...

So far the Foundation was safe. But there was a hidden Second Foundation to protect the first. The Mule has yet to find it, but he was getting closer all the time. The men of the Foundation sought it, too, to escape from Mule's mind control. Only Arkady, a 14 year-old girl seemed to have the answer, or did she ...?

The fifth novel in Asimov''s popular Foundation series opens with second thoughts. Councilman Golan Trevize is wondering if he was right to choose a collective mind as the best possible future for humanity over the anarchy of contentious individuals, nations and planets. To test his conclusion, he decides he must know the past and goes in search of legendary Earth, all references to which have been erased from galactic libraries. The societies encountered...

At last, the costly and bitter war between the two Foundations had come to an end. The scientists of the First Foundation had proved victorious; and now they retum to Hari Seldon''s long-established plan to build a new Empire that the Second Foundation is not destroyed after all-and that its still-defiant survivors are preparing their revenge. Now the two exiled citizens of the Foundation-a renegade Councilman and the doddering historian-set out in...