Tuesday 5 July 2023 was, apparently, the hottest day ever recorded, and 2023 looks like its going to be the hottest year in human history. At this pace, we are heading for a dire future. But we do need to be careful here: after all, humans have been transforming the earth for mllennia. How? How have we changed the earth, and how has it changed us? And what does this mean for our shared future? In this week's episode, Nick Spencer speaks to Peter Frankopan about his book The Earth Transformed: An Untold Story