Four major themes are central to Larry Niven's writing. The first of these concerns human relations with alien civilization, especially the first human contact. Often a human character will gain insight into individual aliens or even into alien civilizat...

Larry Niven writes science fiction with an emphasis on hard science. In his Hugo and Nebula award-winning book Ringworld, Niven constructed an enormous hoop-shaped artificial planet a million miles wide and with a diameter of 190 million miles. All the s...