COP 26 is just around the corner and expectations are high that nations commit to reduce CO2 emissions. Global temperature rises are set to exceed levels at which things could get much worse and so the question is extremely urgent. But three decades since countries first came together to tackle environmental concerns, the pandemic may limit what can be achieved.

Presented by Tanya Beckett Researcher: Natasha Fernandes Editor: Richard Vadon

(Image: Street artists paint a mural on a wall opposite the COP26 climate summit venue in Glasgow: Photo by Andy Buchanan/AFP via Getty Images)