Core Viewpoint - The research team from the Chinese Academy of Sciences has developed a new method using high-resolution satellite remote sensing technology to quantify methane emissions from landfills, which is crucial for addressing climate change [1][2]. Group 1: Methane Emissions from Landfills - Landfills are the third-largest anthropogenic source of methane emissions, contributing approximately 18% of global anthropogenic methane emissions [1]. - The study successfully quantified methane emissions from 102 landfills globally, revealing that management practices significantly affect methane emissions [1]. - Open landfills, lacking strict protective measures, have an average methane emission intensity 4.8 times higher than scientifically managed landfills [1]. Group 2: Methodology and Findings - The research utilized advanced satellites with a spatial resolution of 30 meters and a spectral resolution of 10 nanometers, combined with innovative algorithms [1]. - The current global atmospheric research emission databases severely underestimate methane emissions from open landfills [1]. - The new method provides a systematic assessment of methane emissions differences based on landfill management practices, offering scientific evidence to correct existing database biases [1]. Group 3: Recommendations and Future Implications - The research team calls for the international community to enhance landfill facilities and establish a global satellite monitoring data-sharing platform [2]. - Satellite remote sensing technology can achieve unprecedented temporal and spatial resolution for quantifying methane emissions from landfills globally [2]. - The study is expected to shift monitoring models from isolated measurements to a large-scale, continuous monitoring system similar to weather forecasting [2].