US natural and organic food group WhiteWave Foods - now part of Danone - believes its sustainability programmes and its mission to "change the way the world eats for the better" is a key point of difference to its rivals. Last month, at the Natural Products Expo West trade show in the US, with the sale to Danone on the horizon, Katy Askew spoke to WhiteWave sustainability chief Deanna Bratter to find out about the US company's sustainability strategies.