By Runyu Liang
You might have heard from your Italian friend complaining about the scorching heat in Europe this past summer. But how did the glaciers react? In the Ötztal region of the Italian Alps, an antique bicycle showed up after Rotmoosferner Glacier melted at 3,000 meters. Scientists estimate that there has been an accelerating trend of glacier retreat in the region where the glacier is located. Where did the bicycle come from? It might be related to the vigorous smuggling business between the Austrian and Italian border after World War II.