Chernobyl may be considered a wild life sanctuary..that I do not know...what I do know is that there are many thousands of children within a huge area around Chernobyl who have or die from Leukemia. Friends of mine are involved in transporting them to the UK for two weeks break from the radiation levels and to get fresh air and food...that two weeks is expected to prolong their lives by over two years. As for Hiroshima and Nagasaki, the last I read was the level of radiation is still overly high and many people are dying of radiation triggered conditions still....and this will carry on for many more decades....something to do with the 'half life' of the radioactive material...something I really don't understand but there ya go.