Scientists finally explain why microwaved grapes emit glorious bursts of plasma

The mystery of the glorious fireball emitted by microwaved grapes (featured in my novel Little Brother) has been resolved, thanks to a paper in the Proceedings of the National Academy of Sciences in which Trent University researchers Hamza Khattak and Aaron Slepkov explain how they destroyed a dozen microwaves before figuring out that the grapes were just the right size and had enough humidity to set up standing waves that amplify the microwaves -- and anything roughly grape-sized will do the same. Read the rest