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Microbes

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Harding Icefield in Alaska

SNOW DECORATION  Algae turn the snow pink and red on parts of Alaska’s Harding Icefield. New research finds that the pink snow melts faster than clean snow.

Zika virus

ON THE MOVE  Researchers used genetic information from Zika virus (illustrated) to follow its spread among affected regions in South and Central America and the Caribbean.

aerial view of Trichodesmium microbes

SEA CHANGE  A rethink of earlier studies suggests trouble ahead for a major player in ocean nutrient cycles, the nitrogen-fixing Trichodesmium microbes, which can grow in abundance as seen is this image (pale streaks).

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