The study by Yanlei Feng and Lorenzo Rosa quantifies the global potential of using waste biomass for bioenergy with carbon capture and storage (BECCS) to achieve carbon dioxide removal (CDR) and generate biomethane. The authors assess the availability of waste biomass feedstocks, including livestock manure, crop residues, organic municipal solid waste, and wastewater, at a 10 km resolution. They find that up to 1.5 Gt CO₂ per year, or 3% of global GHG emissions, can be captured through BECCS. The conversion of waste biomass can generate up to 10,700 TWh of bioenergy annually, equivalent to 10% of global final energy consumption and 27% of global natural gas supply. The study highlights the potential of waste biomass to contribute to negative emissions without relying on extensive biomass plantations, preserving soil fertility, and reducing environmental impacts. The results suggest that regions like China, India, the United States, Brazil, and Indonesia have significant biogenic CDR and biomethane potentials, with China leading at 266 Mt CO₂ per year. The study also assesses the techno-economic feasibility of biomethane production, finding that it can be competitive with natural gas prices in some regions. However, social, economic, and political factors may limit the actual implementation of BECCS, and site-specific life cycle assessments are needed to determine the actual net-negative emissions. The authors emphasize the multiple benefits of BECCS, including reducing agricultural emissions, improving water quality, and providing clean energy sources.The study by Yanlei Feng and Lorenzo Rosa quantifies the global potential of using waste biomass for bioenergy with carbon capture and storage (BECCS) to achieve carbon dioxide removal (CDR) and generate biomethane. The authors assess the availability of waste biomass feedstocks, including livestock manure, crop residues, organic municipal solid waste, and wastewater, at a 10 km resolution. They find that up to 1.5 Gt CO₂ per year, or 3% of global GHG emissions, can be captured through BECCS. The conversion of waste biomass can generate up to 10,700 TWh of bioenergy annually, equivalent to 10% of global final energy consumption and 27% of global natural gas supply. The study highlights the potential of waste biomass to contribute to negative emissions without relying on extensive biomass plantations, preserving soil fertility, and reducing environmental impacts. The results suggest that regions like China, India, the United States, Brazil, and Indonesia have significant biogenic CDR and biomethane potentials, with China leading at 266 Mt CO₂ per year. The study also assesses the techno-economic feasibility of biomethane production, finding that it can be competitive with natural gas prices in some regions. However, social, economic, and political factors may limit the actual implementation of BECCS, and site-specific life cycle assessments are needed to determine the actual net-negative emissions. The authors emphasize the multiple benefits of BECCS, including reducing agricultural emissions, improving water quality, and providing clean energy sources.