-- Richard "Pops" Picardi, Sr., a 76 year old cab dispatcher, was arrested Friday for dealing drugs from his Chelsea workplace. The Revere man was noted by police for his advanced age and his prosthetic leg. He faces charges that he sold the painkillers OxyContin, Roxicet and Percocet to undercover police agents over a period of about a month. [Herald; Globe] -- Authorities say the South Boston fire that killed Acia Johnson, 14, and Sophia......