Mr H has put his finger on it again,the use of old oil wells to store Co2 is a great idea,not only would it hold enormous amounts of gas but when stored in oil wells Co2 has the ability to strip vast amounts of residual oil from so called depleted reservoirs .
Once stored it could also be used to stimulate growth in vast hydroponic growing beds using already developed control methods,such beds can be set up anywhere and need no topsoil.
This would convert the Co2 back to oxygen by the natural method,what a wonderful cycle.
