RH:    So, I really enjoyed biology.  I mean, everything I took, I just sucked in.  I absorbed.  And I was really interested in it.  And biochemistry was an eye-opener for me.  I loved biochemistry.  All of a sudden, everything came together in biochemistry.  Physics, chemistry, biology -- you know, they all met.  I think it was where the rubber meets the road.  And it was the same type of Aha! experience I had taking calculus in high school, where geometry and analytical geometry and trig. all sort of  come together. And calculus and biochemistry did that for me my junior year, at Rice.  But because I had struggled so hard in chemistry and because you hd to take physical chemistry, which had a terrible reputation, and because really, I had pretty much decided on ecology and wanting to be an ecologist, I didn’t actually change to biochemistry.  I considered it, but I found it kind of discouraging.  I mean, I found the lack of women -- mostly there were men biochemists.  I don’t know.  I think maybe now I might make a different decision.