Madeleine Finlay is joined by Ian Sample to discuss three intriguing science and environment stories. From a breakthrough in the quest to create organs in the lab to a world-first climate visa that will see citizens relocate from the island of Tuvalu to Australia, plus what happens when two massive black holes collide. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>