From the back cover to the Delta edition of 1965: WORLDS IN COLLISION, the most discussed book of our time, propounds the startling theory that more than once within historical times the order in our planetary system was disturbed and caused enormous cataclysms; the earth became a primeval chaos lashed by tornadoes of cinders; the skies darkened; land masses were destroyed and large portions of the human race perished.
The publication of WORLDS IN COLLISION, in 1950, shook the scientific world and the furor has not yet abated. Many of Dr. Velikovsky’s assumptions that were regarded as contradicting established views in science have been verified and confirmed by new discoveries.
EARTH IN UPHEAVAL, a companion Delta volume to WORLDS IN COLLISION, contains evidence of global catastrophes from the domain of stones and bones. A reading of the two books will give a complete understanding of Dr. Velikovsky’s monumental work.