This “Cross-cutting” section of the Guide provides a window into policies that cut across economic sectors. Climate policies can be specific to one sector of the economy, apply broadly to multiple sectors, address a particular problem that cuts across multiple sectors, or encompass the entire economy. Carbon pricing, for example, can be designed to be economywide, harnessing market forces to identify the lowest-cost solutions across the economy. Regulatory standards as a tool are broadly applicable across multiple sectors, although individual regulatory standards are usually specific to particular activities within a sector. Policies to reduce leakage of methane from the natural gas supply system can apply to industrial activities (e.g., natural gas production in natural gas fields) or to activities that cut across the industrial and residential and commercial sectors (e.g., natural gas distribution via pipelines and natural gas equipment in buildings.) One can learn more about particular cross-cutting policies by clicking on the boxes below.