Oil Companies Back US Carbon Tax Plan

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The US government proposes a $40 tax per tonne of carbon dioxide to slow climate change. Exxon, BP, Shell and others are supporting the proposal. Ted Halstead - who devised the scheme - joins us. Environmental campaigners aren't convinced about the plan - we speak to Cassidy Craighill from Greenpeace USA. Also on the programme, what kind of Brexit does Britain want? Roger Bootle - the chairman of the consultancy Capital Economics - surmises. Plus, how climate change could push up the price of a cup of coffee. The head of coffee research at Kew Gardens, Dr Aaron Davis explains why. Something for all jetsetters....is son of Concorde cleared for take-off? A US company - Boom Supersonic - is planning to build its own plane, which will fly at more than twice the speed of sound. They tell us why... And an aviation expert explains if it'll succeed. After 56 years with Barbie, the famous male doll Ken has had a major makeover. An Editor of GQ Magazine in New York reflects on the transformation. And throughout we have opinion from both sides of the planet - David Moser of Capital Normal University in Beijing and Andy Uhler from Marketplace in Los Angeles. (Picture credit: KAREN BLEIER/AFP/Getty Images)