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May 4 2013

Atmospheric carbon to hit five-million-year record, marine expert warns


The Earth's atmospheric concentration of carbon dioxide (CO2) is about to rise to 400 parts per million (ppm) for the first time in five million years, a scientist at The University of Queensland warned today.

UQ Global Change Institute Director Professor Ove Hoegh-Guldberg said the record 400ppm level of atmospheric carbon was expected this week, according to readings at the US Government's Earth Systems Research Laboratory in Hawaii.

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