== Types section gone!!! == 

 Thank God!  I made a complaint about that section a couple of years ago and got rebuffed by perfectblue... we got in this whole scientific debate which is no longer posted on this page, but finally the article is no longer filled with made up junk!!!  My faith in Wikipedia has been restored!  Now please, don't let articles like these get corrupted by fanatics anymore. They completely destroy this site's integrity.