In 1986, the Chernobyl power plant became the site of the worst nuclear disaster in history. Poisonous radiation caused over 100,000 casualties, and cost billions of dollars to clean up. Even now, the exclusion zone is one of the most polluted and heavily-patrolled regions in the world.   But what caused the catastrophe in the first place? Why did the Soviet Union try to keep it a secret? And what is its lasting impact on the region, and the wider world?  This is A Short History of Chernobyl.  Written by Chris McDonald. With thanks to Professor Serhii Plokhy, author of Chernobyl: History of a Tragedy.   For ad-free listening, exclusive content and early access to new episodes, join Noiser+. Now available for Apple and Android users. Click the Noiser+ banner on Apple or go to noiser.com/subscriptions to get started with a 7-day free trial. Learn more about your ad choices. Visit megaphone.fm/adchoices