It's a patch of green, a wondrous vegetable garden that has sprung up at a height of about 50 feet on the fast-expanding concrete maze of neighbouring New Town in Kolkata, the eastern state of India. A team of five farming experts who run a social service platform in Birbhum district in the eastern state of West Bengal has been working tirelessly to grow more than 35 kinds of organic vegetables on the concrete terrace. Experienced in urban farming in Mexico, Gomez looks after the rooftop vegetable garden. He believes terrace farms can change the micro-climate of neighbourhoods in Kolkata.