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The strange pink snow on the Italian Alps may be a red flag



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As seen in the pink snow in the Presena Glacier.

Miguel Medina/Getty Images

Biagio Di Mauro, a researcher at the Polar Research Institute of the Italian National Research Council, said pink snow, also known as “watermelon snow,” has appeared on the Presena glacier in northern Italy. It is not uncommon for the Italian Alps to be “pink” in spring and summer, but when phenomena caused by algae began to occur frequently, scientists became cautious.

Di Mauro told CNN that the 2020 snowfall and insufficient high temperatures have promoted the growth of algae. More algae may cause ice to melt faster.

When Di Mauro clarified an article in the Guardian in a tweet, he said that the algae may be Chlamydomonas sp. He also said that the relationship between algae and climate change has not been confirmed.

Di Mauro posted a picture of pink snow on Twitter on Monday.

In late May, on the other side of the ocean, Antarctica reports green snow, Caused by microscopic algae. Despite being tiny, green flowers can be found by satellites. The researchers say this color may also be related to the effects of climate warming.


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