Man on Earth: Killer Climate

Tony Robinson investigates the ruins of three civilisations over the past 2,000 years to ask what made them more vulnerable to climate catastrophe than the ones that survived. In the jungles of Central America, he learns about the effect of a decades-long drought on the Mayans, while Dr Joy Singarayer visits Greenland to discover how a mini ice age in the 13th century wiped out the Vikings. In the deserts of America's southwest, Dr Jago Cooper explores the crisis that made the inhabitants of cliff cities homeless