Functional invisibility cloak? Source
I've been reading an article titled 27 Science Fictions That Became Science Facts In 2012 which claims that a functional, battery-less invisibility cloak has been developed and tested. I'm having a hard time believing that this is true, but then again, anything is possible. I highly recommend reading the article, and if anyone knows more about this invisibility cloak, I'd love for you to leave a comment about it.