President Emmanuel Macron paid a visit to France's shrinking glacier on Thursday (February 13). The Mer de Glace is yet another rapidly-disappearing victim of climate change. The Alpine glacier - located above the town of Chamonix - has brought tourists since the 19th century. But over the 20th, it has lost an average thickness of more than 164 feet and research by glaciologists on its future does not look good. A 2019 study suggests that with just 37.4 degrees Fahrenheit of global warming 80% of the glacier would be lost by the end of the 21st century. President Macron said the glacier was evidence of a warming planet.