65 | Michael Mann on Why Our Climate Is Changing and How We Know (opens in new tab)

We had our fun last week, exploring how progress in renewable energy and electric vehicles may help us combat encroaching climate change. This week we're being a bit more hard-nosed, taking a look at what's currently happening to our climate. Michael Mann is one of the world's leading climate scientists, and also a dedicated advocate for improved public understanding of the issues. It was his research with Raymond Bradley and Malcolm Hughes that introduced the "hockey stick" graph, showing ho...