Peru supplies nearly half of the fresh blueberries sold in the U.S. After last year’s heatwave, this is how the country is speeding up the race for varieties more resilient to climate change.

In just a decade, Peru went from not growing blueberries to leading global exports, breaking new records each year. But for harvesters, living conditions have changed little, if at all. Since high...

Peru supplies nearly half of the fresh blueberries sold in the U.S. After last year’s heatwave, this is how the country is speeding up the race for varieties more resilient to climate change.