COP26 - How optimistic are you?

5 Live listeners tell us how they are feeling as COP26 gets underway in Glasgow.The UK is hosting the climate change summit amid mounting concern among scientists that countries are not doing enough to limit the emissions of greenhouse gases, which have caused average global temperatures to rise.The 2015 Paris climate conference called for average temperatures to rise by well below 2C, and preferably only 1.5C, when compared to pre-industrial averages.World leaders have started arriving at the venue in the city - which has officially become United Nations territory - ahead of the summit's opening at midday. Later, they will make statements setting out what their countries are doing on climate change.