Imagine swimming with dolphins off the coast of Florida before breakfast and then climbing Mt. Everest an hour later. What about crawling over the sandy surface of Mars after lunch and then shrinking yourself down to the size of a bug to explore a colorful garden? Soon all these things may be possible thanks to a type of computer technology known as virtual reality (VR). The basic idea of VR is to create an entirely computer artificial sensory world that fools our brains into thinking we’re somewhere else. Virtual reality is incredibly useful and raises all kinds of exciting possibilities in education and many other fields.