What we can learn from the world’s greenest cities — and their kitchens

Going green: most of Copenhagen’s 600,000 residents own a bicycle. Alamy

This was supposed to be the year that Vancouver became the world’s “greenest city”, to quote the ambitious action plan adopted by its administrative council in 2011. On Monday, western Canada’s coastal, mountain-fringed metropolis acknowledged that it wasn’t quite there yet, when it launched a residents’ dialogue on how to “get real” about achieving its lofty green…