ChoKyun Rha ’62, SM ’64, SM ’66, SCD ’67, an MIT professor post-tenure and a groundbreaker in biomaterials science and engineering, died March 2 in Boston. She was 87. The first woman of Asian descent to receive tenure at MIT, Rha held four degrees from the Institute and taught at MIT for more than four decades. Her husband, MIT professor of microbiology Anthony Sinskey ScD ’67, also attended MIT, as did their two sons — Tong-ik Lee Sinskey ’79, SM ’80 and Taeminn Song MBA ’95, who is the director…