Human activity is sending animals and plants extinct. But there is a fightback going on. Scientists all over the world are coming up with radical solutions to save them - from transplanting polar bears, to “de-extincting” a very strange frog. And experts say each one of us can make a difference. So is it too late to save the planet, or can we stop a mass extinction? Contributors include: Dr Simon Clulow – Macquarie University, Australia Dr Karen Poiani – CEO, Island Conservation Professor Jane Hill – University of York, UK Professor Thomas Elmqvist – Stockholm Resilience Centre, Stockholm University Presenter: Feranak Amidi Producer: Beth Sagar-Fenton (image: Romeo, the Sehuencas water frog / Courtesy of Global Wildlife Conservation, Austin Tx USA)