Glacier melt hasn't caused a national crisis in Peru, yet. But high in the Andes, rising temperatures and changes in water supply over the last 40 years have decimated crops, killed fish stocks and forced villages to question how they will survive for another generation.
Without international help to build reservoirs and dams and improve irrigation, the South American nation could become a case study in how climate change can destabilize a strategically important region, according to Peruvian, U.S. and other officials.
Glaciers in the South American Andes are melting faster than many scientists predicted; some climate change experts estimate entire glaciers across the Andes will disappear in 10 years due to rising global temperatures, creating instability across the globe as they melt.
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