TAKABA, Kenya, Sept 1 (Reuters) - Kenyan pastoralists are losing their herds as the Horn of Africa's worst drought in 40 years leaves pasture desiccated and cows with nothing to eat.

When a smell so foul that locals called it “unimaginable” wafted over Cape Town this week, a search for the source of the stench choking the scenic South African tourist destination led to the ...