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By Kate McAlpine of Nature magazine Diagram of 1630 Halo by Christoph ScheinerA print of a diagram that was feared lost details the astonishing halo effects seen over Rome in 1630.Herzog August Bibliothek Wolfenb

When a sustainability consulting firm told Swedish burger chain Max Burgers that its main problem was selling beef, the company actually started trying to sell less of its main product. Okay, you're a burger chain.