Rooftop garden in Kolkata, a men tending his plants and vines.

A man works on his rooftop garden in Kolkata, India. Drought caused by climate change can make a significant impact on the food production of the world. We can use our roofs as a secondary source of food production. In this way, we can help relieve pressure from industrial agriculture and save a significant amount of emission of greenhouse gasses by using local produce.