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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 ...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.
The JOIDES Resolution will venture into the Pacific on its first expedition since it was refurbished.
Click on image for full size
Image Courtesy of the National Science Foundation

Scientists to Investigate Role of Equatorial Pacific Ocean in Global Climate System
News story originally written on February 23, 2009

A team of scientists is out in the Pacific Ocean by the equator in order to collect sediment cores from the ocean floor. The sediment cores contain information about the Earth's past climate that will help the scientists determine what the climate will be like in the future.

The equatorial Pacific is a complicated region that affects the Earth's climate in many ways. The Sun warms the ocean here, this is one of the main regions where carbon dioxide transfers from the deep ocean to the atmosphere.

Over the last 55 million years, the global climate has gone through different periods of being extremely warm and extremely cold. Information on these past climates is contained in sediments on the ocean floor, and information scientists get from this expedition will help them understand how the Earth has become so warm and cold in the past.

Last modified April 21, 2009 by Becca Hatheway.

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