BROOKLINE — Caleb Jacoby, the 16-year-old son of Boston Globe columnist Jeff Jacoby and his wife Laura, has been missing since about 12:30 p.m. Monday. Jacoby is a Brookline resident who is in the 11th grade at Maimonides School. According to a flier distributed by the Combined Jewish Philanthropies and Maimonides School, he is 5-foot-11 and 140 pounds with a thin build and short, light brown hair. Brookline police said the teenager was last seen wearing navy chino pants or jeans, a navy polo shirt, a brown winter jacket with a hood, brown shoes or sneakers, and white socks. He...