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Presented by National Geographic Society in partnership with Rolex. To understand the sweeping transformations reshaping our polar regions, National Geographic Explorer and microbial oceanographer Allison Fong is looking to the smallest forms of life for answers. By studying microbes—which help regulate Earth’s ecosystem—she’s uncovering clues to the future habitability of our planet. Rolex and the National Geographic Society are partnering on science-based expeditions to explore, study, and document change in the planet’s unique regions. #PerpetualPlanet