Trees could grow in Antarctica within century: scientist
SYDNEY (AFP) - Trees could be growing in the Antarctic within a
century because of global warming, an international scientific
conference heard.
With carbon dioxide levels in the atmosphere set to double in the next
100 years, the icy continent could revert to how it looked about 40
million years ago, said Professor Robert Dunbar of Stanford
University.
"It was warm and there were bushes and there were trees," he told some
850 delegates in the Tasmanian capital Hobart, the national AAP news
agency reported.
The delegates are attending the combined meetings of the Scientific
Committee on Antarctic Research and the Council of Managers of
National Antarctic Programs.
Dunbar said climate experts were predicting a doubling of the levels
of carbon dioxide by 2100, "but it actually looks like it's going to
come sooner unfortunately."
Scientists blame greenhouse gases such as carbon dioxide, produced
mainly by the burning of fossil fuels such as coal and oil, for
causing rising temperatures worldwide.
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Relevant Pages
- Re: global warming hoax
... You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues report Oct. 8 in the online edition of the journal Science. ... "The last time carbon dioxide levels were apparently as high as they are today — and were sustained at those levels — global temperatures were 5 to 10 degrees Fahrenheit higher than they are today, the sea level was approximately 75 to 120 feet higher than today, there was no permanent sea ice cap in the Arctic and very little ice on Antarctica and Greenland," said the paper's lead author, Aradhna Tripati, a UCLA assistant professor in the department of Earth and space sciences and the department of atmospheric and oceanic sciences. ... Tripati, before joining UCLA's faculty, was part of a research team at England's University of Cambridge that developed a new technique to assess carbon dioxide levels in the much more distant past — by studying the ratio of the chemical element boron to calcium in the shells of ancient single-celled marine algae. ...
(sci.astro.amateur) - Re: global warming hoax? history shows a different story
... Our planet has mostly been much hotter and more humid than we know it to be today, and with far more carbon dioxide in the atmosphere than exists today. ... You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues report Oct. 8 in the online edition of the journal Science. ... Tripati, before joining UCLA's faculty, was part of a research team at England's University of Cambridge that developed a new technique to assess carbon dioxide levels in the much more distant past — by studying the ratio of the chemical element boron to calcium in the shells of ancient single-celled marine algae. ...
(sci.astro.amateur) - Last Time Carbon Dioxide Levels Were This High: 15 Million Years Ago,
... Last Time Carbon Dioxide Levels Were This High: ... there was no permanent sea ice cap in the Arctic and very little ice on ... Tripati, before joining UCLA's faculty, was part of a research team at ...
(soc.retirement) - Last time carbon dioxide levels were this high
... You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues report Oct. 8 in the online edition of the journal Science. ... "The last time carbon dioxide levels were apparently as high as they are today — and were sustained at those levels — global temperatures were 5 to 10 degrees Fahrenheit higher than they are today, the sea level was approximately 75 to 120 feet higher than today, there was no permanent sea ice cap in the Arctic and very little ice on Antarctica and Greenland," said the paper's lead author, Aradhna Tripati, a UCLA assistant professor in the department of Earth and space sciences and the department of atmospheric and oceanic sciences. ... Tripati, before joining UCLA's faculty, was part of a research team at England's University of Cambridge that developed a new technique to assess carbon dioxide levels in the much more distant past — by studying the ratio of the chemical element boron to calcium in the shells of ancient single-celled marine algae. ...
(sci.physics) - Re: Botanical questions
... Grasses and fruit-producing trees are both in the ... Trees are big plants that modern day dinosaurs build nests in. ... elusive explanation to a question that has thus far stumped scientists. ...
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