Disease controls the rate of evolution. Noam Chomsky said my theories [Mass extinction/SARS]may be of phenomenal importance to man's survival, bottom line as explained in 2010 to Pres. Obama in Prosperity vs Disaster, new diseases will emerge for which mankind has no fail safe immunity and man will go extinct unless we cleanup the pollution. In TWO generations. This is based on work I presented at U of Guelph circa 1992, The Viroid Thermodynamic Theory on the Origin of Life, VTT.