The discussion centers on the significant man-made sources of carbon dioxide, primarily from the combustion of wood, petroleum, coal, and natural gas, all of which are derived from plant life. It explores the potential of enhancing global photosynthesis as a method to counteract CO2 generation. Three types of photosynthesis are highlighted: C3, which is common among most plants; C4, which is more efficient in hot and dry conditions and utilized by many grasses and crops like sugarcane and maize; and CAM, which allows certain plants to conserve energy and water during harsh conditions, though these are less common. While all plants absorb CO2, they also decay and emit CO2, particularly in wet conditions. The key challenge lies not in finding superior photosynthesis types but in preventing plant decay. A proposed solution is to bury plant material and cover it with clay to inhibit oxidation and reduce CO2 emissions.
