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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.
A photo of the flight crew taken earlier this month. The crew is standing in front of the Shuttle Discovery (with its new lightweight external tank). From left to right, they are Pilot Dominic Gorie; Mission Specialists Franklin Chang-Diaz, Ph.D.; Wendy B. Lawrence and Janet Kavandi, Ph.D.; Mission Commander Charles Precourt; and Mission Specialist Valery Ryumin, with the Russian Space Agency.
Click on image for full size
Image courtesy of NASA

A New ET!
News story originally written on May 19, 1998

The shuttle Discovery is scheduled to launch on June 2. This launch will feature a new ET. Not a new extra-terrestrial, but a new external tank!

This new ET looks like the old external tanks, but it weighs 7,500 pounds less. The job of an external tank is to fuel the shuttle's 3 engines during take-off. Because the new external tank weighs so much less, the shuttle can carry that much more cargo. This will be especially important when the shuttle begins carrying up pieces for the International Space Station.

During its nine-day mission, Discovery will dock with space station Mir. Here, Andy Thomas will come onboard the shuttle for his ride home to Earth. Thomas has been living on Mir since January.

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