RANDOM FACTS COMP. 4 There are more than 1,000 CHEMICALS IN A CUP OF COFFEE. OF THESE, ONLY 26 HAVE BEEN TESTED, AND HALF CAUSED CANCER IN RATS. The U.S. Government WILL NOT ALLOW PORTRAITS OF LIVING PERSONS TO APPEAR ON STAMPS. PPukehruvmVta*., The human brain IS 80% WATER. The acid in a