Ice broken off from Perito Moreno glacier floats in Los Glaciares national park, part of the Southern Patagonian Ice Field, the third largest ice field in the world, in Santa Cruz, Argentina. Most glaciers in the park have been retreating over the past 50 years due to global warming. Photograph: Mario Tama/Getty Images
Negotiators in Paris are trying to craft a deal at the UN climate talks that will keep global temperature rise below 2C. But what does that mean in reality - and what difference will a couple of extra degrees really make?
Without action, climate scientists have warned that temperatures could rise by nearly 5C above pre-industrial levels by 2100. World leaders meeting in Paris hope to keep average global surface temperature rises below 2C – but their pledges to cut emissions could still see up to 3C according to analyses. While it is very hard to make firm predictions, here are some of the potential impacts. All are for possible temperature rises occurring by 2100.
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