Replying to What will be big in the next decade?

My parents told me to try and think about what industry or type of business would be big by the time i graduate college which would be class of 2019 so i can figure out what to major in. An example would be today marketing is a huge thing to get into because companies have to give creative ways to draw a crowd to there product and with growing technology people can be more easily influenced toward a product. So what do you guys think will be a big thing in the next 5-10 years?