Star Trek: The Next Generation introduced the holodeck: a virtual reality (VR) apparatus utilizing hard-light holograms that create a virtual world for Starfleet personnel to recreate environments and compete in recreational activities. The holodeck was one of our first glimpses of VR. But VR is no longer just science fiction. Consumer-targeted VR devices allow users to enter lifelike worlds to battle dragons, visit other planets, and compete in games with other users from around the world without ever leaving the living room. Complete article here.