So, this is my first book review. Larry Niven is a classic scifi writer, and a prolific one as well. He doesn’t focus as much on social commentary through scifi as some of my other favorite authors do, but he writes a darn good story, and Ringworld is one of his best.
Ringworld is set in the distant future, when Earth has made contact with many alien species. This story focuses on a group of two humans and two aliens (of different species) who travel to an artificial world constructed by an unknown species at some point in the distant past. This artificial world is not a planet but a ring, and uses technology to mimic planetary rhythyms. There are native (?) inhabitants of Ringworld, most of whom may at one point have known advanced technology but do no longer. Our quartet of explorers faces technical difficulties in the form of a crashed spaceship, and the bulk of the book deals with how they solve this dilemma.
The science is pretty wild, and even though I am a firm believer in suspension of disbelief to better enjoy a story, it is sometimes stretched a little far. However, Niven does offer better explanations for the science behind the Ringworld in the later books in the series, so I will let it pass. Overall a very entertaining story.
For those of you who want more detail, this site has great information about the Ringworld series: