We're at the tip of the tipping point: that's the warning from the UN as the IPCC releases it's final report until 2030.
The report summarises decades of research, providing a scientific underpinning for global climate policy.
It says climate change is no longer a future problem, and needs to be responded to with urgency.
Climate scientist James Renwick's research has contributed to the report.
He spoke to Kim Hill.
