New York City has banned jumbo-sized sugary drinks in restaurants, theatres and streets carts in a bid to tackle the city's soaring obesity rate. But the move has been fiercely criticised by the US soft drinks industry on grounds that the law restricts consumer freedom. Should there be more government regulation of the country's powerful food industry? Guests: Tom Philpott, Per Pinstrup-Andersen, Adam Eidinger.