The director of the World Trade Organisation Ngozi Okonjo-Iweala says she is concerned about protectionism, which she doesn't think would work in today's world. The "arms race" in AI has been mostly a financial one but now it seems there's a race to grab talent too. We discuss this with Humayan Sheikh, one of the major investors in the British AI firm Deep Mind. And South Africa's Environment Minister Barbara Creecy tells us why one of the best ways to protect her country's wildlife might be to eat more of it.