Pret A Manger

One burger, hold the carbon

Fast food is bad for us – and even worse for the planet. While chains are trying to make their meals ethical, they could do more, argues Sophie Morris

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How tuna conquered the world

We swallowed it in sandwiches. We scoffed it as sushi. Now it's swimming straight towards extinction. How did the global appetite for tuna become insatiable? Martin Hickman reports

Smoothie operators sell out to Coke

Have the founders of the Innocent label compromised their ethics by taking £30m from a corporate giant? Martin Hickman investigates