Many tropical glaciers in the Andes are expected to disappear in the next few decades. Their meltwater sustains millions of people, feeding crops in the dry season, supplying Peru’s capital Lima and other big cities, and even boosting the Amazon river. As glaciers vanish, floods and droughts are becoming more extreme.
But my new research with colleagues suggests solutions may lie in environmental knowledge that the Incas and their predecessors developed centuries ago.
