Associated Press: For years, Hernan Argueta's small plot of coffee plants seemed immune to the fungus spreading elsewhere in Central America. The airborne disease that strikes coffee plants, flecking their leaves with spots and causing them to wither and fall off, failed to do much damage in the cooler elevations of Guatemala's mountains.
Then, the weather changed.
Temperatures warmed in the highlands and the yellow-orange spots spread to Argueta's plants. Since the warming trend was noted in 2012, the 46-year-old...