Instruct: Classify Amazon reviews into positive or negative sentiment
Query: listened to audio version

I listened to this while exercising at the gym.The first CD on the formation of the universe was rather dull.The second, on the development of physical science was very dull and I found myself fast forwarding at times.The third CD on dinosaurs and mass extinctions and the earths structure was ok.I did not find this to be worth continuing and deleted it.This was one of the least interesting history/science audio books I have listened to. The subject matter selected was not interesting. There is no reason to recommend this over any other similar book. I'm not faulting the text or analysis in terms of accuracy, just saying it was not enjoyable to listen to.