Photo taken on Feb. 22, 2017 shows a warning sign at Okuma near the Fukushima Daiichi nuclear power plant, Fukushima Prefecture, Japan March 11, 2018 by Jon Day TOKYO, March 11 (Xinhua) — “Everyone used to call her ‘Grandma.’ She was one of the sweetest, kindest and most generous people you could ever hope […]
20 millisieverts per year 