Current Events

  • Kansas Legislator Proposes Bill to Outlaw Sustainability Education
    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of ...Read more

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    Kansas Legislator Proposes Bill to Outlaw Sustainability Education

    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of sustainability. Here is a link to the one-page bill: http://www.kslegislature.org/li/b2013_14/measures/documents/hb2366_00_0000.pdf. See report on Bloomberg News.
  • Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows
    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 ...Read more

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    Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows

    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and the mantle above, must be at least 1500 degrees to explain why the Earth has a magnetic field. For more information about this study, see the press release from the European Synchrotron Radiation Facility.
  • Ocean Volcanic Rocks Contain Samples of Recycled Crust
    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials fr...Read more

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    Ocean Volcanic Rocks Contain Samples of Recycled Crust

    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth’s crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including Carnegie’s Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature. Oceanic crust sinks into the Earth’s mantle at so-called subduction zones, where two plates come together. Much of what happens to the crust during this journey is unknown. Model-dependent studies for how long subducted material can exist in the mantle are uncertain and evidence of very old crust returning to Earth’s surface via upwellings of magma has not been found until now. For more information about these results, see the press release from the Carnegie Institution.

    Image courtesy of Brigitte Baeuerle.

From: Brigitte Baeuerle
Arica, October 24, 2008

Growing olives in the Apaza Valley

The woman in this picture is Ester, a lively and energetic local Arica resident who visited the operations center after a local newspaper reported on VOCALS. Ester took me to the Apaza Valley, which is a fertile and narrow oasis about three kilometers east of Arica. Throughout the year, the valley produces a variety of fruits and vegetables, but most importantly the olives of Apaza, famous for their color and taste. Ester wanted to show me her well maintained and peaceful olive grove but also wanted to raise my awareness of the changes that she had been seeing for the last six or nine months. A lot of her neighbors have started to sell their groves to large agricultural firms who then cut the olive trees to make room for corn. Ester was concerned about the long term impact of these changes to the valley's century old agriculture, especially the availability of water and its quality downstream. After we returned to Arica, Ester invited me to her home where she was in the process of transforming part of her entry way into a small shop from where she will sell marinated olives and olive oil to her neighbors.

Brigitte

Postcards from the Field: Climate Science from the Southeast Pacific

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