A radiation survivor and expert, an elderly returnee, and a wildlife researcher paint a picture of life 40 years after the worst nuclear disaster. A radiation protection engineer works in front of the sarcophagus covering the destroyed fourth reactor under the NSC, at the ChNPP [AFP] A ChNPP operator stands in the control room of the destroyed 4th block of the plant [AFP] Chornobyl Exclusion Zone, Ukraine - It’s a freezing January morning, and the sun is glistening across a placid, snowy, forested landscape. But the calm is deceptive. An air raid siren suddenly blares across the crisp winter air. Two soldiers scour the skies, hands firmly gripping anti-aircraft guns mounted on pick-up trucks parked on a small, dilapidated bridge on a tributary of the Pripyat River.…