I am not entirely sure what is meant by declaring a climate emergency. As far as I am concerned, there is a climate emergency. The IPCC report gives us 12 years to get this sorted out, which is a nanosecond in climatic science terms. We do need to scare the pants off our constituents about the changes that we need to make, but it will only work if we carry our constituents with us. With their busy lives, they will simply turn a tin ear to finger pointing and negativity. We need to mobilise the essential optimism of the British people about the opportunities for change that exist right across the economy.