1. GLACIERS:
Meltwater catastrophes are forming high in the Andes
Glacial melt is a popular topic in global warming discussions, with its contribution to rising sea levels and shrinking freshwater supplies among the main concerns. But for mountainous communities in Peru, such long-term worries are obscured by a much more imminent threat -- glacial lake outburst flows, called GLOFs -- poised just above them.
