Genetically-modified crops provoked scepticism and outright objection from many environmentalists and food campaigners when they were first launched in the 1990s.A new wave of GM crops is on the way but this time, the scientists claim, they will offer clear benefits to the public. There will be orange juice that helps you lose weight, grains fortified with the zinc our bodies need and new sustainable sources of Omega-3. In 'Costing the Earth' investigates the second generation of GM and asks if, this time, British consumers will welcome them onto the supermarket shelves.Producer: Alasdair Cross

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