On land and sea, climate change causing 'irreversible' losses: UN

The Amazon rainforest risks a 'tipping point' at which it will dry up and turn to savannah

An average increase of 1.5 degrees Celsius above pre-industrial levels would see almost all of the world's coral reefs unable to recover from ever more frequent marine heat waves

Climate change has already caused "irreversible losses" for Nature, UN experts have said, warning that if emissions are not cut quickly, warming could trigger chain reactions with potentially catastrophic effects for all species, including humans. 

"Climate change has caused substantial damages, and increasingly irreversible losses, in terrestrial, freshwater and coastal and open marine ecosystems," the IPPC says in its key Summary for Policymakers.