Greenpeace activists have used a life-size polar bear puppet to stop a coal train heading for Nottinghamshire's Cottam power station.
The charity says the "highly realistic, life-size, moving polar bear puppet - previously used in National Theatre productions - has just walked up to the front of the locomotive, where it’s now stopping the train from moving."
The animal is intended to symbolise the global movement to save the Arctic from climate change, which is mainly driven by coal.
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