Three for tomorrow
Three for Tomorrow (1969) contains three novellas written specially for the volume on the following theme selected by Arthur C. Clarke: "with increasing technology goes increasing vulnerability: the more man conquers Nature, the more prone he becomes to artificial catastrophe" (foreword, 8). As with most collections, Three for Tomorrow is uneven. Silverberg's installment is the best due to its intriguing social analysis of a city suddenly whose inhabitants are suddenly missing large swaths of the past. Zelazny's installment is completely unlike his other works. Instead of his trademark lyricism and intriguing fantasy-esque landscapes à la Lord of Light (1967), he churns out a run-of-the-mill James Bond inspired caper with some sci-fi elements albeit, told with some vigor and vibe. James Blish's contribution is an often hilarious satire of a future polluted world literally filled up with the refuse of boundless human consumption.  Blish often lecture the reader about what will happen if we don't recycle but the environment/characters/motivations are so uproariously funny that these lectures are OK.
Science fiction, Thinly disguised lectures, American Science fiction
Robert Silverberg, Roger Zelazny, James Blish
Robert Silverberg is an American author, best known for writing science fiction. He is a multiple winner of both the Hugo and Nebula Awards.

Silverberg received a Nebula award in 1986 for his novella Sailing to Byzantium, which takes its name from Yeats' poem; a Hugo in 1990 for Enter a Soldier. Later: Enter Another; and in 2004 he was named a Grand Master by the Science Fiction Writers of America.

([Source][1])


  [1]: http://en.wikipedia.org/wiki/Robert_Silverberg || Blish trained as a biologist at Rutgers and Columbia University, and spent 1942–1944 as a medical technician in the U.S. Army. After the war he became the science editor for the Pfizer Pharmaceutical Company. His first published story appeared in 1940, and his writing career progressed until he gave up his job to become a professional writer. He married literary agent Virginia Kidd in 1947. He worked for the Tobacco Institute from 1962-1968.  In 1968, he emigrated to England. Between 1967 and his death in 1975, he became the first author to write short story collections based on the TV series Star Trek. In total, he wrote 11 volumes of short stories adapted from episodes of the series, as well as an original novel, Spock Must Die! in 1970. He died midway through writing Star Trek 12; his second wife, J. A. Lawrence, completed the book, and later completed the adaptations in the volume Mudd's Angels.