CHENNAI, India -- In the small village of Attapadi in the southern Indian state of Kerala, 52-year-old farmer Jayan Cherian lives in an organic-mud house faced with lime plaster, designed by Biju Bhaskar, the founder of Thannal Natural Homes. With a rainwater harvesting system, fruit trees in the garden and solar panels, Cherian's mud home keeps him relatively cool through the scorching summers.







