short version: scientists have created a new kind of light by combining photons from 2 different lasers.
normally, photons can't interact with each other : the two beams of light will simply cross paths and pass straight through each other.
but scientists at MIT & Harvard have found a way to cause photons to combine with each other through quantum entanglement...
...Now that photons have been shown to interact, they could be used in a variety of new applications.
It's possible that one day scientists could make the photons interact in such a way that they can create real-life light sabers, or beams of light that 'pull or push on each other...making a luminous stream,' MIT said.
(like Cyclops in the X-men -- light cannon bazooka)
Read more: Scientists create new form of light as photons interact | Daily Mail Online