Randall Munroe is the former NASA physicist turned bestselling cartoonist behind XKCD and the What If blog.  He talks about his new book How To: Absurd Scientific Advice for Common Real-World Problems.  Randall reveals the cost of putting a lava moat around your house, how to move your house with helicopters, how to throw a coin or just about anything across a river, and how Serena Williams takes down a drone.  Plus Randall explains fishing with electricity, why scientists still haven’t figured out how ice works, and why the US military once nuked a bunch of beer cans. Order Randall Munroe's new his book How To: Absurd Scientific Advice for Common Real-World Problems on Amazon, Audible or wherever books are sold, and view some of his wonderful cartoons at www.xkcd.com.  Today's episode was sponsored by Capella University's online doctoral program.