UN Climate Change Executive Secretary Simon Stiell, on the launch of the Nationally Determined Contributions Synthesis Report, released on 28 October 2025, said that we are in a new era of climate action and ambition. Countries are setting national climate targets – and plans to achieve them – that differ in pace and scale to any that have come before.

Stiell said that 10 years after we adopted the Paris Agreement, it is delivering real progress, but we must work much faster and fairer, and that acceleration must start now.

The scale and severity of the climate crisis has never been clearer. Brutal climate-driven droughts, floods, storms and wildfires are hitting every nation harder each year, wrecking millions of lives and vital infrastructure, taking shreds off GDP and pushing up prices. At the same time, the opportunities in climate action are monumental.

He pointed out that the rewards for those taking strong climate actions are measured in millions of new jobs and trillions in new investment. As the global shift to clean energy continues to scale, the dividends to follow will be far greater still, as climate action emerges as the economic growth and jobs engine of the 21st century.

The NDC Synthesis Report provides valuable new data, both about progress being made and the major challenges still remaining.