St. Louis-based ThermoAI is using artificial intelligence and internet of things to optimize combustion for power plants and industry. The company claims the technology can save millions in fuel and reduce emissions. The ThermoAI team includes a machine-learning Ph.D. from Oxford, a chemical engineer and a published applied AI expert. The company says it’s increasing combustion efficiency by three to five percent with its existing proof-of-concepts. ThermoAI is a 2018 Arch Grants Global Startup Competition award winner.