Bacteria? One of the basic support systems for all life?
They are one of the basics of life as we know it.
The Sahara thing? That seems to be just a fuzzy headed dream as of today - maybe in the future after small areas have been proven it would be good on a larger scale. Mother nature is not easily thwarted plus the local tribesmen will have found a new source of firewood to the harm of the overall scheme.
Not an easy area to try something different/new.
If it can be made to work - great!