Watch Mary Midgley and Peter Singer discuss humanity and animal rights.

Almost forty years after these two philosophers helped create the idea of animal rights, what do they believe would constitute further progress in our attitudes to other forms of life?

Live from Melbourne, Australian philosopher, Princeton professor and author of Animal Liberation, Peter Singer joins the "UK's foremost scourge of scientific pretention" (Guardian) Mary Midgley to consider the future of bioethics. Roger Bolton makes sure the tough questions get answered.

Click on the image to watch the debate!