Atomic Secrets: a Chornobyl scientist warns of a toxic future

Dmitry Kalmykov is a Ukrainian scientist who has dedicated his life to investigating environmental disasters, first at Chornobyl and now in Semipalatinsk, Kazakhstan - formerly the Soviet Union's primary nuclear weapons testing site. He teaches schoolchildren about how bombs were tested, and how – more than 30 years after the site was decommissioned – the surrounding community is only beginning to comprehend radiation's lasting deadly effects. Against the backdrop of war in Ukraine a