These maps will in turn guide partners in determining where to drill boreholes to bring the water to the surface in a cost effective manner.

UNESCO: Combating drought in the Horn of Africa

In cystic fibrosis, this mechanism is far less effective, because the level of salt concentration in the airway surface liquid is far too high.

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These will be much more effective at filtering contaminated water because the beads will have greater surface area for the arsenic to bind to than the plastic chips.

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