Sara Meraki

Coffee farmers are dealing with a lot.

They often live in poverty, migration has caused labor shortages, and many small farmers are aging.

Climate change is another looming threat.

That means rising temperatures, unpredictable weather, floods, and droughts.

One study predicts that half of the world's coffee growing area could be unusable by 2050.

Coffee consultant Sara Meraki works with farmers.

Scientists are studying new varieties of coffee that could grow in hotter climates, but it could be many years before they go mainstream.

James Dubek, NPR News.