Massive geotextile sheets were placed over the Presena glacier in Italy to reflect the sunlight and reduce temperatures—and help prevent or reduce the melting of ice. The practice has been employed since 2008. https://abcn.ws/2OB2rc0 | ABC World News Tonight with David Muir

36 reactions · 3 comments | Pink snow was seen for the first time on parts of the Presena glacier in northern Italy. The phenomenon is caused by algae that develops when snow melts（融化 rónghuà）, simultaneously making the ice a darker color. In a vicious circle, the algae in turn increases the rate at which the snow melts by accelerating the absorption of radiation. | Learn Chinese | Facebook

28 reactions · 15 shares | It's that time of year again. The Presena #glacier in northern Italy is being covered by a tarp. According to Italian media, the glacier has lost one-third of its surface in less than 20 years. Officials say the tarp will save about 70% of the snow over the summer season. | Pattrn | Facebook