Great leaders? Industrial change? Revolutions? If you thought these were the things that shaped history, think again. Back by popular demand, Lewis Dartnell returns to the show. He explains how modern political and economic patterns correlate with events which happened not decades or centuries ago, but hundreds of millions of years before human civilisations existed. Perhaps more relevant than ever in these uncertain times, it’s never been more compelling to understand Earth’s impact on the shape of human civilisations.