Artificial Intelligence (AI) is the science of making machines intelligent such that it can perceive data externally and learn from them to improve future results.
Looking around today from self driving cars to intelligent personal assistants like Siri and Google now, everything is AI. Eventual goal of AI is to outperform human beings at any cognitive tasks. Currently, it can be true for some of the tasks like gaming etc. While, AI can be super useful in medical science as well as in day to day life like self driving cars and personal assistant but there are some grey shades of AI. Somebody can program the machines to be really destructive like autonomous weapons which are designed to murder people like human bombs. Hence, lately a lot of investment is been done towards the safety of AI systems.