This episode explores the potential of data-driven climate policy to mitigate methane emissions, using Mexico City's air quality improvement as a case study. Against the backdrop of Daniel Zavala-Araiza's childhood experience with severe air pollution in Mexico City, the episode highlights the successful implementation of policy changes, cleaner fuels, and improved energy efficiency that drastically reduced pollution levels. More significantly, the discussion pivots to Zavala-Araiza's current work on methane mitigation, emphasizing the urgency of addressing methane's potent warming effect. For instance, he explains how new handheld and satellite-based monitoring technologies are crucial for tracking and verifying emissions reductions. The EU's ambitious climate neutrality goal and its new methane emission regulations are presented as a promising example of data-driven climate action, potentially serving as a model for other countries. Ultimately, the episode conveys a message of hope, highlighting the potential for significant progress through the combination of technological advancements, robust policy, and international cooperation. This signifies a growing trend towards using data-driven approaches to tackle climate change, with implications for various sectors and global environmental initiatives.