THE BBC – Sometimes referred to as the “City of Eternal Spring”, Medellín’s temperate climate has long helped attract tourists all year round, but increasing urbanisation had also exposed it to the urban heat island effect, where buildings and roads absorb and retain heat. Its new green corridors, however, have proven remarkably effective in reversing this impact, with a 2C temperature reduction across the city, according to local government data seen by BBC Future Planet. Immerse yourself HERE