Courses are free and from Open sourced by MIT. Some of them touches on very serious problems you have interest into.
http://ocw.mit.edu/OcwWeb/Biological-Engineering/index.htm
http://ocw.mit.edu/OcwWeb/Physics/index.htm
http://ocw.mit.edu/OcwWeb/Brain-and-Cognitive-Sciences/index.htm
Actually, it’s , more that time is an issue of money then knowledge, IMO.