By Duncan Green

Let's hope the UK's unexpected lead on tackling world hunger is a genuine effort to address the problem of feeding the planet

Mouthwash is the nutritional equivalent of greenwash, an approach to ending hunger that is more about fragrant PR than finding long-term solutions to feeding the planet without destroying it. And the mouthwash test will be ready and waiting for the recently announced hunger summit, to be hosted by Britain during the Olympic Games.

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