data journalism

Arena’s groundbreaking data investigation, Green to Grey, wins Sigma Award

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The Sigma Award logo, an illustration of several pencils pointing at a cloudy sky scene, with the text "winners announced" overlaid.

We’re excited to announce that the Green to Grey investigation is a Sigma Award Winner for 2026! Our groundbreaking data journalism investigation, a collaboration between Arena and 11 news teams across Europe, revealed the scale of nature and cropland loss across the continent over a six year period. It was the first investigation of its kind, … Read more

‘First of its kind’: Behind the scenes of Green to Grey’s groundbreaking data investigation

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A collage of the green to grey logo on the left, with a colour coded map of Europe on the right.

We’ve described our latest cross-border collaborative journalism project, Green to Grey, as an investigation that is the ‘first of its kind’. That’s a big claim – so, let us explain what we mean. When we launched the project, we outlined the story of how it came about: inspired by the Norwegian broadcaster NRK’s original investigation … Read more