What sort of science/math is good to know outside of math/science? Such as can I use calculus for anything outside of engineering? Seems like knowing statistics/data analysis might be a good idea for investing or for growing your own business.
What about biology? At least have some know on how hormones, vitamins, food, dieting all work?

It's a broad question. For me I'm interested in mostly investing and things like gathering data and figuring out if something is a good idea to do. I'm just not sure what to learn. But feel free to share/ask itt anything about general applications/things to learn that make life better or easier.