Fallen angels
Larry Niven (Author), Jerry Pournelle (Author), Michael Flynn (Author), Stephen Hickman (Illustrator)
After a new United States government has been elected to halt several green house effect programs, a destructive ice age emerges and only two missing Space Hab astronauts hold the key to saving the planet
Print Book, English, 1991
Baen Books, Riverdale, N.Y., 1991