The Chincha Kingdom was transporting seabird excrement from islands to valleys as early as the 13th century, and this powerful fertiliser may have been key to its economic success ...

New archaeological evidence reveals that seabird guano—nutrient-rich bird droppings—was not only essential to boosting corn ...

Maize farmers in Peru’s Chincha Valley were fertilizing their crops with seabird poop as early as the year 1250 ...

In 1532, in the city of Cajamarca, Peru, Spanish conquistador Francisco Pizarro and a group of Europeans took the Inca ruler ...

Guano dramatically boosted the production of maize, and the surplus helped fuel the Chincha Kingdom’s economy.

For nearly five centuries, something ancient has waited beneath Cusco, Peru’s cobblestone streets. While tourists photograph ...