It is time to take leave of the 20th century. The decisive challenge facing society is climate change and all other social or economic developments are going have to accomodate this. The language could have been slightly more subtle. The point is unambiguous. The aim of those presenting the Green New Deal in the USA is to redefine what it is to be progressive. I welcome this. As far as I am concerned that has always been the case in the UK as well; it’s just that things have gone a little faster in the US of late.