Part 1 of Essay
The world and its inhabitants will face a multitude of problems in the 21st Century, including drug addiction, deadly disease, violent crime, warfare and hostility, hunger, and homelessness to name a few. All of these critical issues have been present to some extent in the 20th Century and, left unsolved, will continue t ....

Part 2 of Essay
.... the next millennium, medicine will be perhaps the most important and influential in combating the problems of mankind and in solving them. People in the field of medicine will continue, as they have in this century, to address and participate in almost all concerns. For example, methadone is currently being used as a therapeutic intervention for some drug addictions. In addition, various medications are now being given in the treatment of criminals, like anti-psychotic drugs to curb aggressive or violent beha ....