Through the centuries, women and men have been searching for the ultimate contraceptive. Many different methods have been tried and many have failed. Some have been painful or comfortable and others ineffective and others effective. Either way different methods have been past down from generations. ...

More people are at risk of infectious diseases than at any other time on history. Infectious diseases are worldwide problem requiring worldwide attention. Infectious diseases can weaken the strength of a nation's resources. In developing nations this poses even a greater threat. Diseases are threat...