Lake Tana is immense. From a shoreline too distant to see, waves move across the lake, bringing warm, humid air to the city of Bahir Dar in northwest Ethiopia. Further inland, farming communities irrigate their crops — wheat, corn, potatoes, onions — drawing from a reservoir fast-filling with silt. Up in the highlands, the earth is scarred with deep cracks, and household wells run dry.

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Silhouettes of children playing swing in turbine wind park at sunset