Algae, when used in conjunction with AI-powered bioreactors, is up to 400 times more efficient than a tree at removing CO2 from the atmosphere. That means that while we are learning to reduce carbon emissions and augment our consumption patterns, we can start to make big reductions in atmospheric carbon. When wielded correctly, it could make a city carbon negative without changing current production or consumption patterns of the city.

Trees and algae sequester carbon dioxide naturally. Trees “consume” it as part of their photosynthesis process by “absorbing” carbon into their trunks and roots and releasing oxygen back into the air. Algae replicates the same process but “absorbs” the carbon in the form of more algae. Algae can consume more carbon dioxide than trees because it can cover more surface area, grow faster, and be more easily controlled by bioreactors, given its relative size. Bioreactors can contain large amounts of algae and optimize for its growth (and related sequestration) cycle in a way that is easier than trees and takes the overgrowth of algae, dehydrates it, and ultimately puts it to use as fuel or biomass.

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