Tens of millions of Americans are expected to clock out and spark up for the global cannabis holiday today known as 4/20. That includes about 15,000 in Golden Gate Park's Robin Williams Meadow ...

"The green market is growing, yet 86% of new consumers don't know how to use cannabis," said event vendor Vanessa Oliver. "It is our job as educators to teach them." ...

Our best estimate is that roughly three-quarters of the weed currently sold to consumers in California is illegal (meaning it is not licensed by the state), and only one-quarter is legal.