UN peacekeepers will be leaving southern Lebanon after 40 years of service in the region, which dismays former peacekeeper, Professor Ray Murphy. Plus, "de-extinction" - the controversial science of reviving vanished species - raises myriad ethical and environmental questions. Guests:Ray Murphy, former UN peacekeeper with UNIFIL in Lebanon and Professor with the Irish Centre for Human Rights at the University of GalwaySadiah Qureshi, Chair of Modern British History, University of Manchester. Writer and historian of science, race, and empire