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PEMBA, Tanzania, Jan 20 (IPS) - As the cool morning breeze sweeps across the Indian Ocean beach in Tanzania’s Pemba archipelago, Salma Mahmoud Ali begins her day. With her brightly coloured Kikoi cinched tightly around her waist and a dark blue scarf framing her face, she walks barefoot toward her salt ponds. The humid air hangs, but Ali wades through ankle-deep water with courage.