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Re:Defying gravity, 2022 Climate Tech VC funding totals $70.... by defrost on Sunday January 08, 2023 @10:00PM (#34306199)
Concrete alone accounts for 5-8% of global emmissions (solid enough range, not a tighter figure due to systemic reporting issues).

[1] https://bze.org.au/research_release/rethinking-cement/

[2] https://en.wikipedia.org/wiki/Environmental_impact_of_concre...

[3] https://www.nature.com/articles/d41586-021-02612-5

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