On the 40th anniversary of the Chernobyl disaster, POWER sent a freelance photographer and correspondent to the site in Ukraine to document the massive decommissioning effort still underway—and the new threats that have complicated it. At 1:23 a.m. local time on April 26, 1986, a sudden and uncontrollable power surge destroyed Unit 4 of the Chernobyl Nuclear Power Plant, located about 130 kilomete...