MethaneMapper solves the problem of underreported methane emissions. When most oil and gas companies, coal plants, and factory farms ignore leaks in pipes and self-monitor their fields to measure the least carbon and methane possible, emissions accounting and regulation mean very little. MethaneMapper is an open-source, AI-powered hyperspectral imaging tool to detect methane emissions and trace them to their sources. The tool works because data does not come from handheld devices or even individual installed devices that can be easily fooled. The input data is overhead — airborne hyperspectral images of the target area. MethaneMapper is therefore far more accurate and works over a far wider geographic region than traditional monitoring.