Chernoby's legacy
The accident led to large quantities of radioactive fuel being released into the air near the town of Pripyat.
It is the worst nuclear power plant accident in history - the only level seven event on the International Nuclear Event Scale - and spread radiation across much of Europe.
Advertisement
Hide AdThe effects of the disaster are still felt, most profoundly in neighbouring Belarus.
The Edinburgh-based Friends of Chernobyl's Children (FOCC) formed four years ago to help detoxify the immune systems of those children affected by the disaster, as well as offering international friendship.