Pink ice in Italy's Alps sparks algae probe(1/4)

A researcher at CNR (National Research Council) takes samples of pink coloured snow on July 4, 2020 on the top of the Presena glacier near Pellizzano. (Photo/Agencies)

A researcher at CNR (National Research Council) takes samples of pink coloured snow on July 4, 2020 on the top of the Presena glacier near Pellizzano. (Photo/Agencies)

An aerial picture taken shows pink coloured snow on the top of the Presena glacier near Pellizzano, July 4, 2020. (Photo/Agencies)

An aerial picture taken on July 4, 2020 above the Presena glacier near Pellizzano, shows pink colored snow, supposedly due to the presence of colonies of algae of the species Ancylonela nordenskioeldii from Greenland. (Photo/Agencies)