<p>I would say biomedical engineering. Since a higher percentage of the population is aging, many more will need medical care and will create demand for BME innovations.</p>
<p>In no particular order: Economics, Biosciences, International Relations, English Literature, History, Political Science, Neuroscience, Engineering, Computer Science, and Spanish/Chinese/Psychology/something random.</p>
<p>In other words, the same ones as today.</p>