Just a quick fyi: Audible.com is giving away a free chapter (in audio) from a new book, Uranium Wars: The Scientific Rivalry that Created the Nuclear Age (preview it on Amazon here). Written by Amir Aczel, a skilled popular science writer, the book takes a close look at the scientists who discovered the destructive potential of uranium and launched the beginning of the nuclear age. Since the book has been getting good reviews, I thought that I'd flag this free giveaway. Also, as mentioned here before, Audible runs a regular promotion that will let you download a free audiobook of your choice (for example, Uranium Wars) if you start a 14 day free trial. Once the trial is over, you can continue your Audible subscription, or cancel it, and still keep the free book. The choice is yours. You can initiate that process here.