Scientists and technicians invented and perfected the internal combustion engine and the chemical DDT.Now other scientists and technicians are seeking ways combat their deleterious effects. Scientific research has been responsible for the medical advances which have helped to produce worldwide population increases. No one would argue, of course, that the reseach should not have taken place, or that the continuing battle against disease is not one of humanity's most worthwhile engagements. Most would agree,however, that science must move as quickly as possible to come up with a safe and simple method of birth control as it continues to fight to prolong life.