Methane’s powerful global-warming effect is attracting attention from policy makers and environmental NGOs. Although energy users and suppliers account for less than a quarter of global methane emissions, reducing methane leakage is one of the energy industry’s most effective ways to reduce its climate impact. What are the challenges to the practical implementation of methane reduction measures? How should industry address the public’s perception of its responsibility for methane emissions? What role should the oil, coal, and gas industries take?