Bison rams grandfather in Yellowstone Park, knocking him metres into the air

The lead

The man and his grandson appeared a safe distance away from the bison before it quickly chased them down

The impact

The significance lies in what happens next: BBC notes that responses are already forming.

The bison backdrop

The landscape around bison, rams, grandfather, yellowstone, park has been shifting for some time, and BBC places this development within that longer trajectory.

Where this fits in Signal Ledger

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Our bison read

Signal Ledger reads this through the lens of bison, rams, grandfather, yellowstone, park: The man and his grandson appeared a safe distance away from the bison before it quickly chased them down.