Police in California are participating in “green labs” to better understand how drivers are affected by marijuana use.
Police in California are participating in “green labs” to better understand how drivers are affected by marijuana use. Jim Mone AP
Police in California are participating in “green labs” to better understand how drivers are affected by marijuana use. Jim Mone AP

Police want to understand marijuana users better. So they’re watching them get high

February 16, 2018 01:34 PM