مؤلف: Everett M. M. Rogers

Advances in health care have made extraordinary changes in the life expectancy and level of vitality of the average American. Still, according to the U. S. Surgeon General, a full one-half of all pre …

What is the biggest social problem in the news today? Who makes issues newsworthy and important? Why do some issues receive more attention than others? Social issues that are widely recognized in the …