at university you just don't publish or use your top ideas. Collect & use them when you graduate. In working life it's more complicated as employment contracts have clauses abut these things, but if you document well that you had the idea before or that you created it on your own time you can cover yourself. Also if the idea has nothing to do with the company's main business or tech they can't argue you invented it during working hours.

around 25% of the patients that die in western hospitals. It's ranked 3 on causes of patient death in hospitals - right after cancer and cardiovascular disease which together account for 50% of deaths. Fatal errors in treatment have been proven to drop to 8% in hospitals using computer technology for managing patients.