Climate change is causing rapid warming in the arctic and tropical regions where natural wetland store large pools of carbon and emit methane. As climate continues to warm, there is widespread concern that wetland methane emissions will increase and contribute even more to atmospheric greenhouse gasses and climate change. Since 2007, atmospheric methane concentrations have increased at rapid rates, with 2020 having the largest observed methane increase since systematic measurements began. The precise causes are difficult to quantify because methane is emitted from a diverse number of natural and human-activities, and the removal of methane is from complex chemical processes. Here, using new data on methane stable isotopes, combined with thousands of potential emissions scenarios, a new study confirms that emissions from anthropogenic sources, including agriculture, landfill/waste, and fossil fuel industry, are clearly the driver for the renewed rise of the potent greenhouse gas since 2007, while global wetlands play a minor role with a contribution of less than 20%.