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Cyanobacteria form thick mats in the bottom of Lake Joyce that feature webbed pinnacles called microbialites, partly composed of calcium carbonate, the same mineral that makes up coral reefs. Window to the Past
Science / Earth
Friday January 02, 2015

Tyler Mackey slips through a hole in an ice-covered lake in Antarctica, dropping a dozen meters into the near-freezing water and diving back about 2.5 billion years into the past to study the evolution of life in its earliest form.
Scientist Ken Sims uses a sledgehammer to break rocks on a ridge of Hut Point Peninsula. Chipping Away
Science / Earth
Thursday November 13, 2014

Kenneth Sims is a geologist who specializes in using naturally occurring radiogenic isotopes to study Earth processes. Not the sort of high-tech job that one would think requires lugging a sledgehammer to a rock outcrop in Antarctica.

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Curator: Peter Rejcek, Antarctic Support Contract | NSF Official: Winifred Reuning, Division of Polar Programs