The scaling up of a global carbon dioxide removal (CDR) industry is facing significant challenges over proven results and therefore funding. Guy Wohl and Emily Rogers at RMI have interviewed the CEOs of four start-ups who feature in RMI’s Applied Innovation Roadmap (AIR) report for CDR. “Rewind” is developing a biogenic CDR (bCDR) approach that sinks forestry residual plant matter in the Black Sea to store the plant-embedded carbon for centuries. … [Read more...]
Hemp-based building materials: a low-carbon substitute for timber, concrete
How can we lower the lifetime emissions of building materials? Bernardino D'Amico at Edinburgh Napier University references his research to show how hemp-based materials can substitute for concrete. And it’s even more effective than timber, a popular low-carbon alternative. Growing industrial hemp can absorb twice as much COâ‚‚ compared to growing trees. Raw hemp fibre can be processed into panels and mats for thermal or acoustic insulation. Hemp … [Read more...]
Methane emissions underestimated by 25-40%, says new study
The methane in our atmosphere comes from natural biogenic (plants, animals) and fossil sources. By telling the difference we can know how much we humans are responsible for. It matters because methane is a potent greenhouse gas, second only to CO2. Previous “bottom-up” estimates came from multiplying the number of sources (livestock, natural gas operations, landfills) by their likely emissions. Robert McSweeney at Carbon Brief describes a new … [Read more...]
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