The Only Moat worthy for a Geologists Lair

Did you ever wonder how to protect your lair once you turn to the dark side? (Listen up Elon) Randal Munroe of xkcd fame collaborated with Minute Physics to solve this problem. How to build a Lava Moat: It’s a collaboration to promote the new book “How To: Absurd Scientific Advice for Common Real-World Problems“. […]