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  • Volcanic Glass Yields Evidence of Ancient Water

    News 8 new results for volcanoes
    Volcanoes deliver 2 flavors of water
    Science Codex
    But in volcanoes from the Manus Basin they also discovered evidence of seawater distilled long ago from a more ancient plate descent event, preserved for as long as 1 billion years. The data indicate that these ancient oceanic “slabs” can return to the
    See all stories on this topic »
    Volcanic Glass Yields Evidence of Ancient Water
    Our Amazing Planet
    At underwater volcanoes in Southeast Asia, scientists have discovered evidence of ancient distilled seawater that has been preserved for 1 billion years. Seawater circulation pumps hydrogen and boron isotopes — hydrogen and boron have both light and
    See all stories on this topic »

    Our Amazing Planet

    Willamette University Athletics
    Climate change will shake the Earth
    The Guardian
    The idea that a changing climate can persuade the ground to shake, volcanoes to rumble and tsunamis to crash on to unsuspecting coastlines seems, at first, to be bordering on the insane. How can what happens in the thin envelope of gas that shrouds and
    See all stories on this topic »

    The Guardian
    Hawaii adds 2 new scenic byways on Big Island, Kauai; State officials seek
    Washington Post
    The Big Island route travels along Highway 11 from Manuka State Park in Kona to the eastern end of the island at the Hawaii Volcanoes National Park. At 54 miles it’s the longest stretch of unspoiled natural scenery in the islands.
    See all stories on this topic »
    Volcanic Versus Coral: The Caribbean Throw-Down (PHOTOS)
    Huffington Post (blog)
    The younger islands — those formed by an arc of underwater volcanoes at the points of convergence between the Atlantic and Caribbean tectonic plates — surfaced relatively recently, and include Grenada, St. Vincent, St. Lucia, Martinique, Dominica,
    See all stories on this topic »
    Pantelleria, Its Magma Chamber And Possible Impact On Global Climate
    Science 2.0
    My friend has written a paper on Pantelleria (which I am a co-author of), and I thought it was a good opportunity to discuss some of the techniques we can use to reconstruct a volcano’s magma chamber using the petrology (chemistry and texture of the
    See all stories on this topic »
    Friends of HVNP programs in March
    Hawaii 24/7 (press release)
    Submit your original photographs taken in Hawaii Volcanoes National Park (park entrance fees apply). First, second, and third place awards will be given in 3 categories: Amateur-Beginner, Amateur-Advanced, and Professional. There will also be from 3 to
    See all stories on this topic »

     


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  • Civilisation faces’perfect storm of ecological and social problems

    Civilisation faces ‘perfect storm of ecological and social problems’

    Abuse of the environment has created an ‘absolutely unprecedented’ emergency, say Blue Planet prizewinners

    • guardian.co.uk, Monday 20 February 2012 14.45 GMT
    • Article history
    • COP15 climate change: drought and forest fires in Portugal

      Smoke billows from burned trees. A collective of scientists and development thinkers have warned that civilisation faces an ‘unprecedented emergency’. Photograph: CRISTINA QUICKLER/AFP/Getty Images

      Celebrated scientists and development thinkers today warn that civilisation is faced with a perfect storm of ecological and social problems driven by overpopulation, overconsumption and environmentally malign technologies.

      In the face of an “absolutely unprecedented emergency”, say the 18 past winners of the Blue Planet prize – the unofficial Nobel for the environment – society has “no choice but to take dramatic action to avert a collapse of civilisation. Either we will change our ways and build an entirely new kind of global society, or they will be changed for us”.

      The stark assessment of the current global outlook by the group, who include Sir Bob Watson, the government’s chief scientific adviser on environmental issues, US climate scientist James Hansen, Prof José Goldemberg, Brazil’s secretary of environment during the Rio Earth summit in 1992, and Stanford University Prof Paul Ehrlich, is published today on the 40th anniversary of the foundation of the UN environment programme (Unep). The paper, which was commissioned by Unep, will feed into the Rio +20 earth summit conference in June.

      Apart from dire warnings about biodiversity loss and climate change, the group challenges governments to think differently about economic “progress”.

      “The rapidly deteriorating biophysical situation is more than bad enough, but it is barely recognised by a global society infected by the irrational belief that physical economies can grow forever and disregarding the facts that the rich in developed and developing countries get richer and the poor are left behind.

      “The perpetual growth myth … promotes the impossible idea that indiscriminate economic growth is the cure for all the world’s problems, while it is actually the disease that is at the root cause of our unsustainable global practices”, they say.

      The group warns against over-reliance on markets but instead urges politicians to listen and learn from how poor communities all over the world see the problems of energy, water, food and livelihoods as interdependent and integrated as part of a living ecosystem.

      “The long-term answer is not a centralised system but a demystified and decentralised system where the management, control and ownership of the technology lie in the hands of the communities themselves and not dependent on paper-qualified professionals from outside the villages,” they say.

      “Community-based groups in the poorer most inaccessible rural areas around the world have demonstrated the power of grassroot action to change policy at regional and national levels… There is an urgency now to bring them into mainstream thinking, convey the belief all is not lost, and the planet can still be saved.”

      The answer to addressing the critical issues of poverty and climate change is not primarily technical but social, say the group. “The problems of corruption, wastage of funds, poor technology choices and absent transparency or accountability are social problems for which they are innovative solutions are emerging from the grassroots.”

      To transition to a more sustainable future will require simultaneously redesigning the economic system, a technological revolution, and, above all, behavioural change.

      “Delay is dangerous and would be a profound mistake. The ratchet effect and technological lock-in increase the risks of dangerous climate change: delay could make stabilisation of concentrations at acceptable levels very difficult. If we act strongly and science is wrong, then we will still have new technologies, greater efficiency and more forests. If fail to act and the science is right, then humanity is in deep trouble and it will be very difficult to extricate ourselves.

      The paper urges governments to:

      • Replace GDP as a measure of wealth with metrics for natural, built, human and social capital – and how they intersect.

      • Eliminate subsidies in sectors such as energy, transport and agriculture that create environmental and social costs, which currently go unpaid.

      • Tackle overconsumption in the rich world, and address population pressure by empowering women, improving education and making contraception accessible to all.

      • Transform decision-making processes to empower marginalised groups, and integrate economic, social and environmental policies instead of having them compete.

      • Conserve and value biodiversity and ecosystem services, and create markets for them that can form the basis of green economies.

      • Invest in knowledge through research and training.

      “The current system is broken,” said Watson. “It is driving humanity to a future that is 3-5C warmer than our species has ever known, and is eliminating the ecology that we depend on for our health, wealth and senses of self.”

  • Hold the salt: Coastal drinking water more vulnerable to water use than climate change

    Hold the salt: Coastal drinking water more vulnerable to water use than climate change

    Posted: 21 Feb 2012 07:39 AM PST

    Human activity is likely a greater threat to coastal groundwater used for drinking water supplies than rising sea levels from climate change, according to a new study.
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  • Ocean acidification turns projected climate change winners into losers

    Ocean acidification turns projected climate change winners into losers

    Posted: 21 Feb 2012 07:41 AM PST

    Adding ocean acidification and deoxygenation into the mix of climate change predictions may turn “winner” regions of fisheries and biodiversity into “losers,” according to new research.
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  • Tipping elements in the Earth’s climate system

    Some interesting reading for those interested in the sciences behind Climate Change.

    Tipping elements in the Earth’s climate system

    1. Timothy M. Lenton * , ,
    2. Hermann Held ,
    3. Elmar Kriegler , § ,
    4. Jim W. Hall ,
    5. Wolfgang Lucht ,
    6. Stefan Rahmstorf , and
    7. Hans Joachim Schellnhuber , , , **

    + Author Affiliations


    1. *School of Environmental Sciences, University of East Anglia, and Tyndall Centre for Climate Change Research, Norwich NR4 7TJ, United Kingdom;

    2. Potsdam Institute for Climate Impact Research, P.O. Box 60 12 03, 14412 Potsdam, Germany;

    3. §Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, PA 15213-3890;

    4. School of Civil Engineering and Geosciences, Newcastle University, and Tyndall Centre for Climate Change Research, Newcastle NE1 7RU, United Kingdom; and

    5. Environmental Change Institute, Oxford University, and Tyndall Centre for Climate Change Research, Oxford OX1 3QY, United Kingdom
    1. Edited by William C. Clark, Harvard University, Cambridge, MA, and approved November 21, 2007 (received for review June 8, 2007)

    Abstract

    The term “tipping point” commonly refers to a critical threshold at which a tiny perturbation can qualitatively alter the state or development of a system. Here we introduce the term “tipping element” to describe large-scale components of the Earth system that may pass a tipping point. We critically evaluate potential policy-relevant tipping elements in the climate system under anthropogenic forcing, drawing on the pertinent literature and a recent international workshop to compile a short list, and we assess where their tipping points lie. An expert elicitation is used to help rank their sensitivity to global warming and the uncertainty about the underlying physical mechanisms. Then we explain how, in principle, early warning systems could be established to detect the proximity of some tipping points.

    Footnotes

    • To whom correspondence may be addressed. E-mail: t.lenton@uea.ac.uk or john@pik-potsdam.de
    • **This contribution is part of the special series of Inaugural Articles by members of the National Academy of Sciences elected on May 3, 2005.

    • Author contributions: T.M.L., H.H., E.K., J.W.H., and H.J.S. designed research; T.M.L., H.H., E.K., J.W.H., W.L., S.R., and H.J.S. performed research; T.M.L., H.H., E.K., and J.W.H. analyzed data; and T.M.L., H.H., E.K., and H.J.S. wrote the paper.

    • The authors declare no conflict of interest.

    • This article is a PNAS Direct Submission.

    • This article contains supporting information online at www.pnas.org/cgi/content/full/0705414105/DC1.

    • Freely available online through the PNAS open access option.

     

     

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  • Further Hansen and Sato Climate Reports.

    1. Pubs.GISS: Hansen and Sato 2004: Greenhouse gas growth rates

      pubs.giss.nasa.gov/abs/ha04010t.htmlCached

      Hansen, J., and Mki. Sato, 2004: Greenhouse gas growth rates. Proc. Natl. Acad. Sci. , 101, 16109-16114, doi:10.1073/pnas.0406982101. We posit that feasible

    2. Data.GISS: Forcings in GISS Climate Model: Greenhouse Gas

      data.giss.nasa.gov/modelforce/ghgases/Cached – Similar

      6 Feb 2012 – The figure is an update of Fig. 1 in Hansen et al. (1998) and Fig. 2 in Hansen et al. (2000), Tables 1 and 2 in Hansen and Sato (2004).

    3. Perceptions Of Climate Change By James E. Hansen & Makiko Sato

      www.countercurrents.org/hansen300311.htmCached

      by JE HansenRelated articles
      By James E. Hansen & Makiko Sato. 30 March, 2011 …. Hansen, J., M. Sato, 2004: Greenhouse gas growth rates, Proc. Natl. Acad. Sci., 101, 16109. 3. Hansen

    4. [PDF]

      Paleoclimate Implications for Human-Made Climate Change

      www.columbia.edu/~jeh1/mailings/…/20110118_MilankovicPaper.p…

      File Format: PDF/Adobe Acrobat – Quick View
      by JE HansenCited by 15Related articles
      18 Jan 2011 – James E. Hansen and Makiko Sato. NASA Goddard Institute …. Earth and burial back into Earth’s crust (Berner, 2004). CO2 outgassing occurs

    5. Dr. James E. Hansen — Publications

      www.columbia.edu/~jeh1/publications.shtmlCached – Similar

      5 Jan 2012 – Hansen, J., R. Ruedy, Mki. Sato, and K. Lo, 2010: Global surface temperature change. Rev. Geophys. , 48, RG4004, doi:10.1029/