Climate change is devastating our seas and frozen regions as never before, a major new United Nations report warns.
According to a UN panel of scientists, waters are rising, the ice is melting, and species are moving habitat due to human activities.
And the loss of permanently frozen lands threatens to unleash even more carbon, hastening the decline.
There is some guarded hope that the worst impacts can be avoided, with deep and immediate cuts to carbon emissions.
This is the third in a series of special reports that have been produced by the Intergovernmental Panel on Climate Change (IPCC) over the past 12 months.
All this extra water gushing down to the seas is driving up average ocean water levels around the world. That will continue over the decades to come.
This new report says that global average sea levels could increase by up to 1.1m by 2100, in the worst warming scenario. This is a rise of 10cm on previous IPCC projections because of the larger ice loss now happening in Antarctica.
“What surprised me the most is the fact that the highest projected sea level rise has been revised upwards and it is now 1.1 metres,” said Dr Jean-Pierre Gattuso, from the CNRS, France’s national science agency.
“This will have widespread consequences for low lying coasts where almost 700 million people live and it is worrying.”