| inbluevt | Date: Saturday, 2013/05/11, 10:19 AM | Message # 1 | DMCA |
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For the first time in human history, the concentration of climate-warming carbon dioxide in the atmosphere has passed the milestone level of 400 parts per million (ppm). The last time so much greenhouse gas was in the air was several million years ago, when the Arctic was ice-free, savannah spread across the Sahara desert and sea level was up to 40 metres higher than today.
These conditions are expected to return in time, with devastating
consequences for civilisation, unless emissions of CO2 from the burning
of coal, gas and oil are rapidly curtailed. But despite increasingly
severe warnings from scientists and a major economic recession, global emissions have continued to soar unchecked.
"It is symbolic, a point to pause and think about where we have been and
where we are going," said Professor Ralph Keeling, who oversees the
measurements on a Hawaian volcano, which were begun by his father in
1958. "It's like turning 50: it's a wake up to what has been building up
in front of us all along."
Please read the full article
Message edited by inbluevt - Saturday, 2013/05/11, 10:19 AM |
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