As the eastern Mediterranean bakes in an intense heatwave, high-tech irrigation is keeping Greek olive trees watered. Greece is ranked the 26th most water stressed country in the world, according to the World Resources Institute. On the island of Crete, a pilot precision irrigation project is helping farmers lessen their water consumption. High-tech sensors measure water lost to evaporation, a computer model takes into account soil moisture, weather forecasts, atmospheric temperature, soil salinity and more. The technology could mean olive farmers need only visit their trees in-person twice a year.

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