In one of the most densely populated cities on Earth, a gardening cooperative is helping residents rediscover farming — in the sky.
Vertical gardens are a cool way to claim unused space in the city. One nonprofit is using them to combat hunger in urban areas.
A roof is a terrible thing to waste. That's why the Middle Way House has transformed their roof into a garden for growing food and collecting water.
Scientists from Columbia University are experimenting with more practical ways to make Manhattan roofs green. Really green. As in covered in vegetation!