The World Tourism Organization (UNWTO) has developed methodologies and tools to measure greenhouse gas emissions in the tourism sector. These tools aim to promote responsible, sustainable, and universally accessible tourism. The organization serves as a global forum for tourism policy issues and provides practical tourism knowledge. The publication "Climate Action in the Tourism Sector" provides an overview of these methodologies and tools. The designations and presentation of material in the publication do not imply any opinions on the legal status of countries or territories. The UNWTO does not guarantee the accuracy of the data and accepts no responsibility for any consequences of their use.