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The big question in the mid-21st century was not how to transition away from fossil fuels – that process became self-propelled as renewable energies have become ever cheaper – but how to remove carbon dioxide from the atmosphere.
Ultimately, achieving the Great Draw, as it came to be called, required many different approaches, including biological, chemical, and technological disposal methods. This dispatch examines two solutions using the underestimated and almost magical power of algae: one through robotics and the other through bioengineering. The robot ate vast algae blooms; the genetic engineering approach has modified a…