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The latest round of climate negotiations, COP25, have ended without agreement on many fundamental issues. We join researchers from Perdue University in the US who have developed a role-playing game to encourage climate negotiators and others to take a long-term view. Key to this research project is the concept of tipping points, where an environment changes irreversibly from one state to another. This is accompanied by the loss of ecosystems - for example, the widespread melting of Arctic sea ice, rainforest burning or coral bleaching.

The idea is that such tipping points provide a more meaning full focus for the implication of climate change than abstract concepts like temperature rise.

Image: Polar bear in the Arctic Sea (Credit: Coldimages/Getty)