COP26: Countries aim to turn climate summit promises into policy in final week

Former US President Barack Obama took to the COP stage to declare that the US is ready to lead the world again in fighting climate change, after helping to navigate the Paris agreement in 2015.

But the real business of the summit has been working out how to give immediate and practical help to the countries already on the climate front line.

Reporter: Alex Thomson

Producer: Nanette van der Laan

Editor and camera: James Betteridge