Chernobyl was a disaster of mammoth proportions - we will be living with its legacy for who knows how long. Sparkplug's comment
"doing something for the sake of seeing if we can do it".
also pretty well sums up the way humanity gets itself into these situations: a significant contributing factor to the Chernobyl disaster was fact that an experiment went very very wrong and that many / most of the control / safety systems were disabled.
Science and its allied technologies are great, but without controls they can be disasters waiting to happen: many scientists / businesses / governments seem to be either oblivious to the consequences of their actions or are uncaring of those consequences.
Sparkplug, I feel your dismay at what happened there, but it is even more frightening to realise that it is really just the very prominent tip of an environmental iceberg.
Think also of Bhopal and other similar places - they have similar sorry stories to tell. Exposure, regardless of whether it is nuclear, chemical or biological is an apalling thing to inflict on anyone or anything, and the path back from that exposure can be either difficult or impossible.
h9k
Information on Chernobyl is on the International Atomic Agency Website at www.iaea.org - Search on Chernobyl