I generally just ask friends, I spent 4 years in academia after getting my PhD in applied mathematics, I used to work with equations from magnetohydrodynamics.

I generally just ask friends, I spent 4 years in academia after getting my PhD in applied mathematics, I used to work with equations from magnetohydrodynamics. I got a couple of friends in academia in fields as diverse as oncology, economics, history and physics. Generally I'm not interested in new papers or new findings, I'm generally just try to master the basis of a new science every couple of months to understand the more stuff complicated stuff and this my friends always can provide.