My turn;-
        There is simply no difference between Micro and Macro Evilution. What
appears to be "Macro" is simply "Micro" given enough time to make
spectacular changes. I think most of us know that. Changes occur when
environment changes. Some adapt. Some do not. Some may adapt in
different ways. A lesson from school was "Swimability in Mice". The
situation was that, although mice didn't need to swim, maybe one out of
100 could swim. Them the environment changed and a yearly flood
threatened the mice. The swimmers among them survived. After a few
generations, all the mice that were left were swimmers.
        Art