Percentage of all litter on U.S. roadways accounted for by cigarette butts : 36

Estimated additional hours Americans would spend stoned annually if marijuana were legal in most states : 30,000,000,000

Ounces of marijuana left so far this year in “amnesty boxes” at the Colorado Springs airport : 1.4

Boxes of cookies a Girl Scout sold in two hours this February outside a San Francisco marijuana dispensary : 117

Percentage change since 2000 in the average cost of food worldwide : +123

Portion of U.S. minimum-wage earners who are older than twenty-five : 1/2

Number of inmates a…