CAMBRIDGE, Mass.--(BUSINESS WIRE)--Metabolix, Inc. (NASDAQ: MBLX), a bioscience company focused on developing clean, sustainable solutions for plastics, chemicals and energy, today announced that it has appointed Celeste Beeks Mastin to its board of directors. Ms. Mastin brings more than 20 years of experience in the global chemicals and performance materials sector to the Company’s board. The appointment is effective as of Thursday, January 19, 2012.