In his song ‘ Concrete Jungle ’, the reggae legend Bob Marley sang wistfully about being trapped in a dense and oppressive urban environment ‘where the living is hardest’, all the while longing for the ‘sweet life’.

Would you enjoy a city full of parks, where streets were tree-lined, where cycling and walking were pleasant, a city with grass-insulated roofs on houses and public buildings to keep you warm in winter? According to a Eurobarometer study , there is an 84 per cent chance that your answer is yes.

Fighting climate change is the challenge of the century. The last UN Environment Emissions Gap Report warned that, in order to ensure global warming stays below 2°C, efforts should be tripled , and if we want to stay below 1.