Kilns for firing and making bricks are scattered across the landscape in Dhaka, Bangladesh. Almost all bricks in the country are made using a 150-year-old process where soil is mixed with water, formed into bricks using wooden molds, left to dry in the sun, and then burned in these orange, traditional kilns. As the widespread use of old kilns has hampered air quality in the country, local groups and the government have been working to increase the use of "clean" brick kilns with more sustainable technology.