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Image caption The temperature was logged on Seymour Island, off the coast of the Antarctic Peninsula. Antarctica has exceeded 20C for the first time, after researchers logged a temperature of 20.75C on an island off the coast of the continent. Brazilian scientist Carlos Schaefer told AFP they had "never seen a temperature this high in Antarctica". But he warned the temperature, logged on 9 February, was just one reading and not part of a long-term data set. The continent also hit a record last week , with a temperature reading of 18.3C on the Antarctic Peninsula. This latest reading was taken at a monitoring station on Seymour Island, part of a chain of islands off the same peninsula, at the northernmost point of the continent. Full story

14 February