One of the banana plants in the collection at the USDA's Tropical Agriculture Research Station in Puerto Rico. It's just one of many banana collections around the world that might just hold the key to stopping a fungus's deadly reach. Dan Charles/NPR hide caption

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A Costa Rican banana worker carries a stalk of freshly harvested fruit on a plantation in Costa Rica, where many of the bananas that Americans eat are grown. Kent Gilbert/AP hide caption

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A woman sells bananas at the Kampala Airport. Ugandans eat about a pound of the fruit, on average, per day. Ronald Kabuubi/AP hide caption

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