Stephen Hawking: Why Isn't the Milky Way "Crawling With Self-Designing Mechanical or Biological Life?" http://www.dailygalaxy.com/my_weblo...fdesigning-mechanical-or-biological-life.html
I read his book, "The Grand Design", and I have to admit that it was one of the most impactful things I have ever read. Once you read the first few chapters, you're like "This book is pretty good and easy to understand. I like it!". But then it starts getting progressively more complex to the point that your brain is frying by the end. I recommend it big time. Just my kind of book!