There will be news stories on Somerville’s celebration of Pi Day, an interview with Congressman Mike Capuano who shares his views on the Union Square post office, updates on the hunt for a Union Square Master Developer, and an investigative piece looking into homeless youth, with dozens right here in Somerville. SNN reports on these stories and more. Watch SNN on SCATV SCATV Ch. 3 or online at www.scatvsomerville.org/snn. SNN shows air every Tuesday at 7 p.m., with a new episode every other week.