Researchers trek to a vast bloom of purple algae staining the Greenland ice sheet black.

Courtesy of Laura Halbach

Pink, red, purple, and green algae blooms are growing on glaciers all over the planet. Scientists who study snow and ice algae fear the blooms are a symptom of climate change. Algae blooms can induce ice melt, hastening the catastrophic disappearance of the world's glaciers.

Glaciers around the world are turning beautiful but menacing shades of pink, red, purple, and green.

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Continue Reading An unexpected force may be speeding up glacier melt across the globe: colorful algae blooms