At 1:23 a.m. on April 26, 1986, an explosion destroyed reactor No. 4 at Chernobyl's Vladimir Ilyich Lenin Nuclear Power Station in the former Soviet Union. Thirty years later, five million people still live on heavily contaminated lands and hundreds of thousands of people are sick or suffering. USA TODAY traveled to this still-scarred area to share stories of those living in the shadow of the world's worst nuclear catastrophe.