Dr. Roy Lowry demonstrates the awesome power of liquid nitrogen for a group of students at Plymouth University with a riveting demonstration that culminates in making an LN2-based bomb out of a water bottle, placing it in a giant rubber trash-can full of 1500 ping-pong balls, and waiting for the BANG.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.