I did not hear one word about the most likely factor in the decline of the salt crust- mining. It is clear that they are going to study the minor factors to death, get government grants to do so, then write papers citing these "studies". That is the level to which science has sunk these days. We need a real scientist like Richard Feynman- after all the BS studies, he showed clearly what made the space shuttle explode.
Regards, Neil Tucson, AZ