MIT students have created a brick that could end pollution from dirty brick kilns. PHOTO: CoExist

India’s brick industry, spread out over 100,000 kilns and producing up to 2 billion bricks a year, is a big source of pollution. To fire to hot temperatures, the kilns use huge amounts of coal and diesel, and the residue is horrendous: thick particulate matter, poor working conditions, and lots of climate-changing emissions. MIT students have created an alternative. The Eco BLAC brick requires no firing at all and makes use of waste boiler ash that otherwise clogs up landfills.

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