We live in an age of change regarding mentalities and a consequent time of change in the learning processes. In this sense, it is necessary to create new methodologies and alternative practices to learn, teach and, more importantly, to learn how to learn. In recent years there has been a widespread commitment to use Information and Communication…

The "Morbidity and Mortality Weekly Report" ("MMWR") Series is prepared by the Centers for Disease Control and Prevention (CDC). Data in the weekly "MMWR" are provisional, based on weekly reports to CDC by state health departments. This issue of "MMWR" contains the following studies: (1) Youth Risk Behavior…