Scaling up carbon dioxide removal (CDR) technologies is crucial for meeting climate goals, including limiting global warming to below 2°C. Among CDR methods, biochar—a carbon-rich material produced from biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More through pyrolysis—stands out for its dual benefits. It not only sequesters carbon but also enhances soil health. Yet, its acceptance and integration depend on public awareness and perception.

Recent research analyzing 12 years of Twitter data reveals growing interest in CDR methods, with biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More receiving moderate attention compared to conventional methods like afforestation. Positive sentiment toward biochar remains consistent, likely due to its perceived natural approach to carbon storage and additional agricultural benefits. This contrasts with more controversial techniques like ocean fertilization and bioenergy with carbon capture and storage (BECCS), which attract significant skepticism.

Frequent social media users, often experts or advocates, show higher engagement with biochar and other novel CDR technologies. These users drive nuanced discussions and shape public sentiment. However, infrequent users—comprising the majority—tend to favor conventional, more familiar methods, such as reforestation.

The increasing polarization of public discourse highlights the importance of transparent communication and community engagement. Public sentiment trends indicate a gradual shift toward positive views of biochar, but broader acceptance will require targeted outreach to demystify its benefits and address concerns. As policymakers and scientists push for scalable solutions, biochar’s inclusion in climate strategies will rely on informed and supportive public opinion.

By bridging the gap between technical innovation and societal acceptance, biochar can play a pivotal role in the fight against climate change.