We intend to test the efficacy of Spirulina platensis (Sp.) to pull carbon dioxide (CO₂) out of the atmosphere via respiratory metabolism. Kombucha, which produces CO₂ as a byproduct, will be grown in an enclosed environment next to a culture of Sp. A CO₂ meter will be used to measure the CO₂ levels produced by the kombucha culture in the presence and absence of Sp. Sp. concentration will be monitored via hemocytometer to correlate CO₂ reduction with the amount of Sp. present.