Women wearing face masks to protect against coronavirus ring the church bells at a memorial of the Chernobyl tragedy victims in capital Kiev, Ukraine, Sunday, April 26, 2020. April 26 marks the 34th anniversary of the Chernobyl nuclear disaster. A reactor at the Chernobyl nuclear power plant exploded on April 26, 1986, leading to an explosion and the subsequent fire spewed a radioactive plume over much of northern Europe. (AP Photo/Efrem Lukatsky)