Grover Cleveland "Cleve" Backster, Jr. (February 27, 1924 – June 24, 2013) was an interrogation specialist for the Central Intelligence Agency (CIA), best known for his experiments with plants using a polygraph instrument in the 1960s which led to his theory of "primary perception" where he discovered that plants "feel pain" and have extrasensory perception (ESP).
Grover Cleveland "Cleve" Backster, Jr. (February 27, 1924 – June 24, 2013) was an interrogation specialist for the Central Intelligence Agency (CIA), best known for his experiments with plants using a polygraph instrument in the 1960s which led to his theory of "primary perception" where he discovered that plants "feel pain" and have extrasensory perception (ESP).
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