Human Pollution
Pockets of life on the Icy Continent
Moss beds provide habitat for other organisms that survive on the ice-covered Antarctic continent.
Thin shoots of moss taken from fuzzy clumps growing in Antarctica contain evidence of how human activities are affecting life on the ice-covered continent, new research indicates. Antarctica has no trees, but the moss shoots act somewhat like tree rings, recording evidence of environmental conditions as they grow. Now, Australian scientists have figured out how to decipher the record in the moss shoots. Their technique relied on an atomic marker laid down worldwide half a century ago by nations testing nuclear weapons.
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