30 years after the world's worst nuclear disaster, FRONTLINE and New York University present "Return to Chernobyl." This VR doc takes you on a haunting 360° journey inside the ruins, guided by Aleksandr who was just 9 years old when he survived Chernobyl. Today, Aleksandr is a tour guide bringing throngs of visitors through his notorious hometown -- despite still dangerous levels of radiation. | FRONTLINE | PBS

The Chernobyl disaster is one of the worst nuclear accidents in history and the area still remains radioactive to this day. Check out what happened immediately after the reactors exploded and how some brave men went into the warzone to try and save everyone from an even greater nuclear disaster. | The Infographics Show