Earth In Upheaval Author:Immanuel Velikovsky EARTH IN UPHEAVAL presents documentation of global catastrophes in prehistorical and in historical times--the clear, unequivocal testimony of bones and stones. Significantly this evidence from the natural sciences indicates that these great disturbances which rocked our globe were caused by forces outside the earth itself. — Here is vivid evidenc... more »e, assembled from mountains and oceans, deserts and tundras and jungles, to establish the Velikovsky theory as one of unshakable solidity and of prime importance in man's understanding of the earth's past and man's own origins.« less