The aliens are not coming--they're already here. Thwarted in their initial incursion by secret agent Dan Dannerma, they are armed with high-tech devices and a secret network on Earth and in space. It's up to Dannerman and a host of other Earthmen to stave off all-out war.

A group of aliens known as the Beloved Leaders send a warning to Earth that the planet is about to be destroyed by a hostile race known as the Horch, but when Dan Dannerman, a spy for the U.S. government, is taken prisoner by the Beloveds, he learns that the supposed good guys are really the enemy.

Join science fiction master Frederik Pohl as he takes readers on a wonder-filled non-fictional journey from the ends of the earth to the edges of the universe. Part memoir, part travel guide, and part science primer, Chasing Science is Pohl's way of sharing the thrills and excitement of his life-long love affair with science. With the skill and storytelling zest that has made his award-winning science fiction popular the world over, Pohl brings to readers of Chasing Science all the excitement and fun that he's had throughout his life, as he has observed first-hand the process of scientific discovery. From tours of museums and national laboratories to a journey into the heart of a volcano, Pohl shows readers of all ages how and where they can experience the thrill of seeing various kinds of science, up close and personal. This book is a perfect item for visitors to any of the several hundred hands-on science museums--like The Exploratorium in San Francisco, the Field Museum in Chicago, and others--across the country, a complete list of which appears as an appendix.

Frederik Pohl was on a streak when this Hugo Award–finalist novel was published in 1980. Now back in print after an absence of nearly a decade, this unique science fiction novel is as fresh and entertaining as ever. The story begins when the hero of Gateway finances an expedition to a distant alien spaceship that may end famine forever. On the ship, the explorers find a human boy, and evidence that reveals a powerful alien civilization is thriving on a transport ship headed right for Earth.... At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

Federal agent Dan Dannerman is captured by aliens, cloned twice and made to undergo painful experiments. Dannerman--all three of him--escapes to Earth and mounts an attack to avenge his inhuman treatment. A look at relations between clones by the author of The Siege of Eternity.