Movie buffs have been hearing about artificial intelligence for years – from Steven Spielberg's 2001 science fiction drama AI to the 2015 robotic police force in Chappie and beyond. AI is no longer the stuff of science fiction. This essential part of the technology sector aims to create intelligent machines of all kinds that think, work and react like humans. Just as electricity transformed the way industries functioned in the past century, artificial intelligence -- the science of programming cognitive abilities into machines -- has the power to substantially change society in the next 100 years. AI is being harnessed to enable such things as home robots, robo-taxis and mental health chatbots to make you feel better.