Abstract: Decomposing methane released by landfill sites, swamps, mining, and other activities into carbon dioxide would reduce global warming. The global warming potential of methane is several folds higher than that of carbon dioxide. As such, decomposing methane into carbon dioxide would result in a reduction of global warning. Additionally, it occasionally becomes necessary to abate methane to mitigate otherwise hazardous conditions created by accumulation of methane in confined spaces, such as, underground mines or buildings. A novel method of decomposing methane, even when present in low concentrations, is disclosed. In the method described, ozone is added to the methane-air mixture and passed over a catalyst. Methane reacts with ozone in the presence of the catalyst and decomposes into carbon dioxide and water.