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"Protector" is a 1973 science fiction novel by Larry Niven set within his expansive Known Space universe. The narrative explores the biology and life cycle of the Pak species, who are revealed to be the evolutionary ancestors of humanity. The book details the transformative effects of the "tree-of-l...
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"World of Ptavvs" is a 1966 science fiction novel by American author Larry Niven, notable for expanding his Known Space universe by introducing the ancient, telepathic Slaver alien species.
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The Integral Trees is a 1984 science fiction novel by Larry Niven set in a gas torus around a neutron star where life evolves in zero gravity.
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