Fallen Angels Author:Larry Niven, Jerry Pournelle, Michael Flynn Two marooned astronauts hunted across a frozen, alien world -- Earth! — With the Earth reeling under a new ice age, the lunatic fringe of the environmental movement controls the US government and works to crush all science and technology. Abandoned by Earth, the space colonies replenish their air by scoop-ships diving into the atmosphere -- but A... more »lex and Gordon's ship was brought down by a missile, and now they are wanted dead or alive. Riding to the rescue: an illegal but highly dedicated network of loyal science-fiction fans!« less
This was the first science fiction book I ever read and it really got me hooked on the possibilities of our future. A failed attempt to prevent global warming has created a man-made ice age!