Sci-fi novel with four pyramids growing out of the earth
127430
Novel where pyramids "grow" and change Earth's magnetic field?
97727
Children's short story about material that accelerates away from gravity
41736
Looking for sci-fi short story anthology with a particular story of an Earth/Mars war children inheriting the surface
21252
Series of sci-fi novels: sisters turned into cow like aliens, mother ship full of humans
16900
A short story about finding an inhabitable planet and meeting aliens
102575
Sci-fi book with HUGE trees and catlike people
16021
Book where characters have powers that get stronger as they get closer to the center of the world
94172
Science Fiction story about humans escaping earth's destruction
16594
Earth occupation/invasion book I read in the 90s
150922
Identification of a sci-fi book or book series based on the description of two alien races
50462
Novel(s) based on humanity fleeing from Earth and regressing to a pre-industrial state on a Colony so as to escape detection
97097
Novel with psychic parasites from Earth
135913
Identifying a "finding Earth" series of SciFi novels
147370
Seeking a book set underground on a hostile, volcanic colony world
141309
Fiction novel or movie about sentient dinosaurs
121599
Short story about a gigantic space monster that is big enough to cover half of the Earth
40450
Sci-fi novel about man picked up by aliens to represent earth in battle against galactic invaders