Daily pot smoking on U.S. college campuses at 35-year high: study

The percentage of college students using any illicit drug also rose to 41 percent in 2014, compared to 34 percent in 2006, an increase driven mostly by the uptick in marijuana use, the study said.
In 2014, 35 percent of 19-to-22-year-old high school graduates said they thought regular marijuana use was dangerous compared to 55 percent in 2006, the study said.