Out of the scientific observations presented in post 47, we can discern the most effective and fastest-track tactic to sequester most of Earth's over 700 billion tons of long-resident CO2, plus 40-60 billion tons more of the gas added each year. Here are the scientific facts and their logical conclusions: 1) Three years after the Pinatubo ash were scattered worldwide, Earth's usual warming temperatures resumed. Apparently, fertilization with iron, sulfur and silica is effective in sequestering CO2 up to the time when such minerals have been totally absorbed by 'phytos' within the fertilized ocean section. Scientific instruments measured lowered levels of such minerals within the oceanic water column. Conclusion: We have to fertilize 'arid' parts of the world's 'blue water' parts of oceans, and do it on continuing or perpetual basis. 2) Iron as trace mineral is a necessity for oceanic plants' photosynthesis, whereby CO2 gets