Larry Niven is an American science fiction author, best known for his novel Ringworld, which won the Hugo, Nebula, and Locus awards. Born on April 30, 1938, in Los Angeles, California, he has written numerous short stories and novels, often exploring themes of space exploration and advanced technology. Niven's work frequently features complex scientific concepts and imaginative worlds. He is also known for his collaborations with other authors, including Jerry Pournelle and Steven Barnes. His contributions to the genre have made him a significant figure in science fiction literature.