Sangita Lal, Stacey Foster and Chris Choi investigate the efforts to tackle climate change in Iceland, Sweden and Denmark ahead of Cop 28. In Iceland, Sangita visits the world's first direct air capture and storage plant that removes carbon dioxide from the atmosphere and Stacey discovers the super seaweed feed that reduces methane emissions in Sweden. Chris Choi visits eco villages in Denmark to find out whether the sustainability-focussed lifestyle is the secret to a lower carbon footprint.