I am only going to put one on my list but there are actually two free science based books and one business book available right now worth reading. The one I am putting on the list is The Logic of Chance: The Nature and Origin of Biological Evolution. This is an excellent look using new science to figure out how evolution works in nature. The other science book is called City of Dust: Illness, Arrogance and 9/11 and is a insightful look into the aftermath of 9/11 for those who survived but were near it. The business book is Do the Right Thing, from former Southwest Airlines CEO James F Parker. It is an inspiring book of anecdotes on how doing the right thing can make companies long term successful. Three good reads to expand the mind at one great price, free!