The Astana Times provides news and information from Kazakhstan and around the world. ASTANA — Thirty-five years after Kazakhstan closed the Semipalatinsk nuclear test site, researchers and community advocates say its legacy still shapes health, science and policy. As evidence becomes more precise, experts say the focus is shifting toward how that knowledge can better support affected communities. Photo credit: e-hostory.kz The Aug. 29, 1991, cl…