In 2015, the world agreed to limit global heating to 1.5°C. Ten years later, temperatures are spiralling beyond this and climate chaos is wreaking havoc across the globe. How did we end up here? And how do we navigate what comes next? In this major four-part series, host Laurie Laybourn explores how the world ended up here and uncovers the huge misconceptions and the high-tech fantasies that hold us back. And we meet people with the ideas to navigate what comes next, from protesting pensioners to climate negotiators, Pacific islanders to pre-eminent scientists.