what good things for the environment happened around chernobyl when the nuclear reactor there overheated? An area of 20 miles in any direction of the power station will be uninhabitable for at least 300 years, and potentially much longer.
This is not a good argument against nuclear power. The Chernobyl exclusion zone is actually doing incredibly well on biodiversity metrics specifically because humans don't go there at all. The real issues with nuclear power are how long it takes to set up, sourcing the fuel, and the fact that while containing the waste is not really that big a problem it is one that faces enormous political hurdles in many places