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.
This is the apparatus used by researchers in the lab to simulate the chemistry of the early universe (not your typical telescope).
Click on image for full size
Image Courtesy of Daniel Wolf Savin, Columbia University

A Star Is Born... But How?

Daniel Wolf Savin, a senior research scientist at Columbia University's Astrophysics Laboratory, has published a paper on the research he and his colleagues have done on how stars began. In their research, the scientists identified the key chemical reactions that needed to be better understood so they could create a better model of the formation of the first stars.

Once they determined what they needed to study, they built an apparatus to measure the reaction of the materials that created the first stars. Once they measured the reaction, they calculated it.

They learned that hydrogen and helium produced all other elements in the universe. This happened in the first three minutes after the Big Bang and stars made this possible. Through nuclear fusion, stars generated elements such as carbon and oxygen and all the other raw materials necessary for making planets and life. But how did the first stars come to be? It all depends on hydrogen atoms coming together to form hydrogen molecules.

Last modified August 24, 2010 by Becca Hatheway.

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