Today's Titans interview is with the key figure in one of science's modern triumphs. Susan Solomon and her team were the first to theorise and prove what was causing the hole in the ozone layer above the Antarctic, and why it was growing: chlorofluorocarbon pollutants humans were emitting. What followed is a testament to what can be achieved in the face of significant challenges with international collaboration. What lessons does it hold for how we tackle climate change? Like this podcast? Please help us by supporting the Naked Scientists