In this major new four-part series, Tony Robinson travels back through 200,000 years of human history to find out what happened to our ancestors when violent climate change turned their world upside down. 

Some civilisations flourished while others were destroyed. Vicious and sudden changes to the climate killed millions; but benign climate conditions have enabled humans to multiply and develop at an extraordinary pace. Using CGI effects and stunning imagery, this series visualises the world's changing landscape over tens of thousands of years.

Tony asks what our society can learn as we face our own climate crisis today and seeks answers at some of the world's most important and intriguing archaeological sites, speaking to leading archaeologists, historians and climate scientists. Helping on his quest are climate change archaeologist, Dr Jago Cooper and climate modeller, Dr Joy Singarayer.