50 years ago, researchers thought Americans outgrew marijuana
Excerpt from the January 29, 1972 issue of Science News

Over the last 50 years, using marijuana has become more common among adults over age 25.
FatCamera/E+/Getty Images Plus
Excerpt from the January 29, 1972 issue of Science News
Over the last 50 years, using marijuana has become more common among adults over age 25.
FatCamera/E+/Getty Images Plus