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Latest Tipping point Stories

2012-01-31 06:11:58

These researchers assert that the Arctic is already suffering some of the effects that, according to The Intergovernmental Panel on Climate Change (IPCC), correspond with a "dangerous climate change". Currently, the rate of climatic warming exceeds the rate of natural adaptation in arctic ecosystems. Furthermore, the Eskimo population is witnessing how their security, health and traditional cultural activities jeopardize. The experts demand an effort in order to develop indicators that...

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2011-12-03 08:17:02

A drastic decrease in atmospheric carbon dioxide levels appears to have been the catalyst that led to the formation of the Antarctic ice sheet, according to a new study published December 1 in the journal Science. The research, which was completed by an international team of experts led by Mark Pagani of Yale University, "helps solve a long-standing scientific puzzle and confirms the power of CO2 to dramatically alter global climate," according to a Thursday press release from the...

2011-09-01 11:27:38

A new study of dust-like particles of soot in the air – now emerging as the second most important – but previously overlooked – factor in global warming provides fresh evidence that reducing soot emissions from diesel engines and other sources could slow melting of sea ice in the Arctic faster and more economically than any other quick fix, a scientist reported here today. In a presentation at the 242nd National Meeting & Exposition of the American Chemical Society...

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2011-04-18 11:44:37

Scientists said Monday that a better monitoring network for greenhouse gases is needed to warn of significant changes and to help countries keep their emission levels honest. "What we're hoping to do is see if the warming is feeding the warming, particularly in the Arctic," said Euan Nisbet, a specialist in methane emissions at the University of London. "Our monitoring network is very, very limited. We feel more observation is needed." Scientists said in published papers that such a...

2011-04-16 00:47:04

A new paper appearing in the Proceedings of the National Academy of Sciences (PNAS) suggests that people, governments, and institutions that shape the way people interact may be just as important for determining environmental conditions as the environmental processes themselves. "Tipping points," qualitative changes in an ecosystem that often result in reduced ecosystem health and are difficult and costly to reverse increasingly concern environmental scientists. The prevailing assumption...

2011-01-21 00:00:48

High-Resolution Video, Photos Available Upon Request New York (Vocus/PRWEB) January 20, 2011 New research shows that 2010 set new records for the melting of the Greenland Ice Sheet, expected to be a major contributor to projected sea level rises in coming decades. "This past melt season was exceptional, with melting in some areas stretching up to 50 days longer than average," said Dr. Marco Tedesco, Director of the Cryosphere Processes Laboratory at the City College of New York (CCNY...

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2010-12-16 06:25:00

According to a new study released Wednesday, there is no "tipping point" beyond which climate change will eventually push the Arctic icecap into a total melt off. Over the past 30 years the polar icecap has shrunk between 15 and 20 percent causing much concern that with current trends -- with regional temperatures increasing two to three times the global average -- it could disappear entirely during the summer months by the end of this century. One factor in this calculation is a so-called...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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