Melting glaciers threaten to wipe out European villages – is the steep cost to protect them worth it?

Switzerland spends almost $500m a year on protective structures. Is it worth it – or, as some suggest, should people move away from the mountain villages at risk?
Source: US News and Business Report -usnewsandbusinessreport.com- BBC Breaking
Melting glaciers threaten to wipe out European villages – is the steep cost to protect them worth it?