Gurinder Nagra is the founder of Furno Materials, which is developing a more energy-efficient way to produce cement. Cement is currently produced primarily in large, expensive structures with large flames heating a furnace, producing a little bit of cement and a lot of carbon dioxide emissions. Furno's reactors use oxyfuel combustion, which involves burning in an environment of pure oxygen instead of air, to produce cleaner emissions, and this combustion process takes place in a much smaller furnace which is portable and less capital intensive. Backed by $9 million in funding since Nagra founded the company in 2020, Furno has developed a pilot reactor capable of manufacturing half a ton of cement per day and will begin sending samples to customers this fall. He's aiming to build commercially viable cement plants capable of manufacturing 20 tons per day by 2025.

https://www.forbes.com/profile/gurinder-nagra/?sh=5045e80f3095