An urban reforestation project in Milan is attempting to plant 3 million trees in the northern Italian city, roughly equating to the population of the city’s metropolitan area. The project spearheaded by Milan’s municipality, the Lombardy region and other local governments called Forestami, has already planted hundreds of thousands of trees. Planting trees, they say, is the first step to making cities greener. “First, we need to imagine a cultural change: where we have asphalt, we should think about green areas with grass and trees, areas where people can live and use,” said Maria Chiara Pasto…