“So,” I ask Seth Rogen, “how many joints do you roll a week?” “I don’t know. Between fifty and seventy-five.” “Can you roll while we talk?” Stupid question. Anyone who rolls fifty-plus joints a week ...

In a world where marijuana companies list on the New York Stock Exchange and weed is vaporized in devices that look more like iPhones than head-shop pipes, it’s satisfying to see that many cannabis ...