Urgent global action needed to stop drastic climate change trend: IPCC report author

Human-caused climate crisis is "unequivocal" and temperatures are likely to rise by more than 1.5 degrees Celsius over the next 20 years, a report by the Intergovernmental Panel on Climate Change (IPCC) warns.

Xinhua talks to one of its authors on how dire the situation is and what should be done.

Produced by Xinhua Global Service