Yep, sounds like Safecast. Safecast is a non-profit organization that collects precise radiation readings and shares them via their website and mobile app. We reported on its collaboration with Tokyo HackerSpace a year ago and recently featured its iOS app.
Brief, informative, and shot with a cinematographic eye, the short is well worth a watch. Safecast’s founders explain in a simple, direct way why they came up with the idea of collecting radiation measurements globally and how they got the ball rolling.
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