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.
Photo of Dr. Timothy Killeen, Assistant Director for the Geosciences at the National Science Foundation
Click on image for full size
Image Courtesy of Roberta Johnson

Dr. Timothy Killeen

Dr. Timothy Killeen, Assistant Director for the Geosciences, National Science Foundation (NSF)

Tim was appointed NSF’s Assistant Director for the Geosciences in July 2008. In this role, he oversees the Geosciences Directorate (GEO), which supports research in the atmospheric, earth and ocean sciences including climate processes and changes, the water cycle, and natural disasters such as earthquakes, tsunamis and severe storms.

Prior to this appointment, he served as director of the National Center for Atmospheric Research (NCAR) since 2000. Before that, he was Professor of Atmospheric, Oceanic and Space Sciences, Associate Vice President for Research, and Director of the Space Physics Research Laboratory at the University of Michigan. He has held leadership roles in the geosciences for many years, including chairing numerous national committees and advisory panels. He served as president of the American Geophysical Union from 2006-2008, and is a member of the National Academy of Engineering. His research interest is in satellite measurements and modeling of the upper atmosphere. He holds a doctorate in atomic and molecular physics and a B.S. from University College London.

Tim is married, and is the father of three wonderful kids!

Last modified September 9, 2009 by Becca Hatheway.

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