Global warming milestone about to be passed and there's no going back

By Peter Hannam
Updated May 11 2016 - 8:23am, first published May 10 2016 - 8:58pm
Another threshold is about to be crossed in rising carbon dioxide levels. Photo: Peter Rae
Another threshold is about to be crossed in rising carbon dioxide levels. Photo: Peter Rae
David Etheridge, from CSIRO's Oceans & Atmosphere division, at work in a research hut near the Antarctic base of Casey. Photo: Colin Cosier
David Etheridge, from CSIRO's Oceans & Atmosphere division, at work in a research hut near the Antarctic base of Casey. Photo: Colin Cosier
Watching the world at it changes at Cape Grim. Photo: John Woudstra
Watching the world at it changes at Cape Grim. Photo: John Woudstra
The Cape Grim greenhouse gas station in Tasmania run in partnership by CSIRO and the Bureau of Meteorology.
The Cape Grim greenhouse gas station in Tasmania run in partnership by CSIRO and the Bureau of Meteorology.

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