Indian slums get 'cool roofs' to combat extreme heat

Painters apply liquid-applied membrane coating that, according to the authorities, helps bring down the temperature inside the shanties at a slum in Ahmedabad, India, Jan. 30, 2025.

Hundreds of roofs in the informal settlements of India's western Gujarat state have been painted in a reflective, white coating over the last two months to try to keep their occupants cooler as the hottest time of year approaches.