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Salt of the Earth

If you've driven by farm fields in the upper Midwest and noticed white, chalky soil that seems out of place and doesn't seem to go away,then you've seen soil salinity. It's an indication of too much salt in the soil,and it can ruin crops or make it virtually impossible to grow a productive crop. This documentary explores the cause of salinity and the potential solutions, some of which can be controversial. This provocative documentary informs both as a cautionary tale and also as an educational tool for farmers, soil scientist and ordinary citizens.