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accelerated achieved agriculture airplane American animals application atomic bomb atomic energy automobile B. F. Skinner brain breeding chemical chemical elements chemistry continue corn cosmic cosmic rays created crops cyclotron decades demonstrated deuterium discovered discovery disease drugs early earth effect electrical elements emotions engine experimental experiments exploration field fission future galaxies genetic geological heredity human hybrid hydrogen idea important increase industry insecticides insects Interlingua isotopes kind laboratories light light-years living machines mathematics mechanical ment mental methods miles military millions missiles modern mutations National natural operation organic outer space particles patent photographic physics planes plants population possible problems produced progress Project Mohole proton psychoanalysis radar radiation radio radioactive record rocket satellites scientific scientists sheave speed stars sulfa drug television tests theory thermonuclear thermonuclear bomb thousand tion tubes twentieth century universe Upper Late uranium utilization vacuum tubes vitamin weather