Alarm bells have been ringing loud and clear for decades but in more recent years extreme heatwaves, droughts and flooding have pushed the threat posed by rising temperatures far higher up the political agenda. World leaders, business groups and campaigners gather in Glasgow next weekend, for the COP26 summit but will it be a turning point for our planet? This week, BBC Wales' Environment correspondent, Steffan Messenger is joined by a panel of guests to focus on farming - an important part of the Welsh economy and rural way of life of course, but a sector too that's right at the heart of the debate around how we confront climate change.