4 marijuana facts the pro-pot lobby doesn't want you to know

Today is April 20, a day of celebration for marijuana enthusiasts everywhere. But did you ever wonder how it came to be?It's 1971 in Northern California, and a bunch of kids at San Rafael High School are on the hunt for a vast treasure: a secret patch of marijuana plants hidden in the backcountry of nearby Point Reyes.Chinese organized crime has come to dominate the illegal marijuana trade across the country.See, an older guy they know has been growing it, but now he's worried that he's going to...