Freakonomics by Steven D. Levitt
Best Books of the Decade: 2000s
7,215 books — 28,370 voters
The God Delusion by Richard DawkinsThe Demon-Haunted World by Carl Sagan
Notable Atheist Books
583 books — 995 voters

The Universe in a Nutshell by Stephen W. HawkingA Brief History of Time by Stephen W. HawkingCosmos by Carl Sagan
Best General Science Books
590 books — 495 voters
The Hobbit, or There and Back Again by J.R.R. TolkienI Am a Cat by Natsume SōsekiThe Metamorphosis by Franz KafkaThe Trial by Franz KafkaThe Hitchhiker’s Guide to the Galaxy by Douglas Adams
Best Books of the 20th Century
7,888 books — 49,805 voters