I purchased Guns, Germs, and Steel, by Jared Diamond, today. I watched a documentary he made based on the book awhile ago, and after watching it I have been interested in reading his book. The main point of his book is to explain how certain cultures ended up more technologically advanced as opposed to others based on their geography. He argues that the geography in Europe and parts of Asia made it possible for the peoples there to shift from a hunter/gatherer/nomad society to farmers, who eventually raised livestock, and so forth and so on. He uses New Guinea as a prime example, and argues that the aboriginal people living there are more intelligent than people in MDCs, but their geographic location made it impossible for their society to advance past that of hunter/gatherers. I am really excited to get into this book and read more in-depth on his theories. Here is a link to a simple synopsis of the book