Invisibility, force fields, and light sabers.  That’s what Michio Kaku – a professor of theoretical physics at the Graduate Center of the City University of New York, a cofounder of string field theory – writes about in his new book, Physics of the Impossible.  This short review explains how all three of those science fiction fantasies could come true in the near future.  Kind of freaks me out.  But since, according to some of my critics here, I don’t believe in science or facts, I suppose I’ll have nothing to worry about.