For the past 7 years radiation specialist Lucas Hixson has been working at the abandoned Chernobyl nuclear reactors in Ukraine. In 1986 an accident at the former Soviet nuclear plant killed 31 people immediately, and thousands more from the health impacts of long term radiation exposure. When Hixson first arrived there he was struck by the sight of hundreds of stray dogs that the other workers were feeding. These dogs, living in harsh conditions and preyed upon by wolves, are the offspring of pets abandoned when people were evacuated from the area. Hixson now does his best to feed and care for them; through his adoption and sterilisation efforts he has reduced the total dog population living there from 1,000 to about 500, and he does popular online tours giving people around the world a glimpse inside his work.