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Greetings from the Rhône Glacier, where a gash of pink highlights how it's melting

Rob Schmitz

Far-Flung Postcards is a weekly series in which NPR's international team shares moments from their lives and work around the world.

"What do you think would look better: pink or green?"

The bubblegum hue won. A scientist from the Swiss public university ETH Zurich nodded, pulling out a bottle of pink dye to release from the top of the Rhône Glacier in the Swiss Alps.

Turning the rivulet flowing down a melting glacier into a bright-pink stream was the least scientific test carried out this day. It was intended as a visual aid for journalists like me accompanying the team of scientists measuring the pace at which water flows off this glacier. The result: Faster than ever.

On the August day I joined the team, we were surrounded by a 360-degree aural landscape of running water. Some of those currents were coming from beneath the ice we gingerly trekked on, testing each step with a little weight so that we didn't fall through one of the dozens of massive cracks. As the team took turns leaping over one, I was reminded of the packing list we were emailed before the trip — which included "Ice pick (Eispickel) in case of a slip into a crevasse."

Fortunately, none of us had to use our Eispickel on this particular day. But we did use our cameras after the team poured the bottle of pink solution into a glacial stream — temporarily turning it into an even more unnatural display than the quickly vanishing glacier itself.

See more photos from around the world:

Copyright 2025 NPR

Rob Schmitz
Rob Schmitz is NPR's international correspondent based in Shanghai, covering the human stories of China's economic rise and increasing global influence. His reporting on China's impact beyond its borders has taken him to countries such as Kazakhstan, Mongolia, Vietnam, Thailand, Australia, and New Zealand. Inside China, he's interviewed elderly revolutionaries, young rappers, and live-streaming celebrity farmers who make up the diverse tapestry of one of the most fascinating countries on the planet.