Black carbon comes from burning fossil fuels,its the stuff that darkens the skies over the Indian cities. It's dangerous to breathe, it reduces crop yield and it contributes to global warming. It only stays in air for weeks but can kill over one million people every year.

Tejas Sidnal an architect and the inventor for carbon tiles from India, launched a carbon craft design in 2020 to create marketable products that upcycle waste. Tejas sources most of the black carbon from companies that would otherwise release it into the atmosphere. Like Companies that recycle tires. The factory produces loads of black carbon that usually gets sold as cheap fuel. But when that gets burned it puts the pollution back into atmosphere. Carbon craft interrupts this cycle and puts the toxic power in its tiles. Black carbon comes in huge sacks dry and absolutely pitch black. The sacks go to a factory that has been making tiles by hand for 35 years. Many mass produced tiles only harden in kilns burning at high temperatures. But carbon tiles made from cement are never baked, so the process doesn't require a lot of energy acting as a lowest carbon footprint way of making a tile. The workers follow a process that's been around for over 200 years. Now they replace some ingredients with black carbon and press the slurry under hydraulic press for 2 seconds. The firmed up tiles still need to strengthen through a process called water curing.That means they get hosed down everyday for nearly a month. And they are ready to get packaged and sold. 

It is very important to appreciate these innovations and make them reach large set of clients for the well being of future generations.

sources:https://www.thebetterindia.com/225013/mumbai-startup-air-pollution-tiles-carbon-craft-design-sustainable-innovation-india-ang136/