In this special episode ahead of the COP26 climate summit in Glasgow, Liz Bonnin puts your questions to the BBC’s environment correspondent Matt McGrath, science correspondent Victoria Gill, and energy policy expert Professor Jim Watson. With contributions from Sir Ranulph Fiennes, Mya-Rose Craig and Chris Packham, questions tackled include how much carbon does it take to melt a cubic metre of sea ice, why is a new coal mine in Cumbria even up for discussion and how will we make sure countries stick to the pledges they make at the talks? We also bust some jargon and give you a complete rundown on all the key issues ahead of the critical climate summit.