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Core Insights - The research team from the Chinese Academy of Sciences has made significant progress in monitoring methane emissions from landfills using high-resolution satellite remote sensing technology, developing a new method for precise quantification of methane emissions [1][3] - Landfills are the third largest anthropogenic source of methane emissions globally, accounting for approximately 18% of total anthropogenic methane emissions, highlighting the importance of accurate monitoring [3] - The study utilized satellite data to assess methane emissions from 102 landfills worldwide, detecting 367 effective methane plumes and achieving precise quantification of emissions [3][4] Methodology and Findings - Traditional methane monitoring methods are limited in coverage, precision, and cost, while the new satellite-based approach offers higher spatial and temporal resolution for global methane emission quantification [3] - The research differentiated between open landfills without protective measures and sanitary landfills designed for safe waste treatment, revealing that open landfills emit methane at an average intensity 4.8 times higher than sanitary landfills [3][4] - The study's findings provide a scientific basis for correcting biases in current emission databases and support the formulation of global reduction policies with reliable data [4]