Can I just tell you how much I love Mary Roach? Because I love Mary Roach. I bought her newest book Grunt: The Curious Science of Humans at War a few months back as a father’s day present for my dad. My dad an I share a common interest in military history, and this seemed like it would be right up his alley as well – seeing as how he is also a scientist. I’ve read a few of Roach’s books in the past (Stiff was particularly fascinating), and I knew I too would love this book. My original intent was to wait until it came out in paperback to…