It is probably not available commercially yet; however, there is research being conducted in Munich, Germany to develop carbon fiber from algae (https://www.algaeindustrymagazine.com/the-short-distance-from-algae-to-carbon-fiber/). I anticipate that a commercially available product will be available sometime during the next 5 years, and it will have the potential to be a strong, lightweight, and carbon-negative building material.
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