Glaciers retreat: how to adapt to a changing climate?

Glaciers retreat is affecting the Chacaltaya Mountain in Bolivia.

Glacier retreat is attributed mainly to the rapid rise in temperatures: recent studies confirm that in the high Andes, the mean temperature is increasing more quickly than in the rest of the world.

A severe impact of glaciers retreat is the lower water availability for Andean populations' agriculture ad basic needs, as well as for the ecosystem.

A World Bank project attempts to tackle some ways to adapt to the changing climate and to mitigate the effects of glaciers retreat: http://bit.ly/XJEZ8v

Which are the best mitigation and adaptation options? And is the glacier retreat phenomenon well understood enough to find effective responses?