I understand that there are ten branches of engineering (possibly more). . . .

aeronautics and astronautics
biological engineering
chemical engineering
civil engineering
computer science & engineering
electrical & electronic engineering
environmental engineering
mechanical engineering
nuclear engineering
systems engineering

I'd like to know specific details of this fields. . . .especially on Biological Engineering 

To the engineers,  future engineers, and to those who know somethings about engineering, plz come in