The Christmas season has always been an important time for Hollywood’s box-office numbers — 2015 being no exception, with Star Wars: The Force Awakens expected to shatter the record $208 million opening set by last summer’s Jurassic World. But with most of the money from ticket sales going back to the studios, movie theaters now make most of their profits from concessions sales — reviving the old joke that a movie theater owner is essentially the proprietor of a popcorn stand. But that could all change if environmental zealots have their way. Read more.