Take a photo of a barcode or cover
cowboyyeehaw 's review for:
challenging
informative
reflective
fast-paced
Carl Sagan excellently theorizes and postulates on the evolution of human intelligence while making really fascinating observations. Nearly a decade before the discovery of the KT Asteroid that caused the extinction of the dinosaurs, Sagan predicted such event using the discoveries at the time. The insights Sagan provides are very much worth reading and the book is quickly paced.