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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 Space Shuttle Atlantis landed safely at the Kennedy Space Center after completing its mission to the International Space Station.
Click on image for full size
Courtesy of NASA

Space Shuttle Atlantis Returns
News story originally written on May 30, 2000

It took much longer than NASA had hoped, but the Space Shuttle Atlantis finally made it to the International Space Station (ISS) this past week. Delay after delay kept Atlantis grounded and the ISS in need of repairs. Scientists are rejoicing after the 10 day mission was completed with a landing at Kennedy Space Center.

Why are scientists so excited about the space station? The all-important service module should arrive this summer, which means astronauts will soon stay on the station. This mission's goal was to prepare the ISS for the module. The orbit was corrected and repairs were made. The next step is to add the service module made by Russia.

"The kind of health problems that we have to overcome on the way to Mars will be solved in a large part on the space station,'' NASA Administrator Dan Goldin said. "So the path to Mars goes right (through) the International Space Station.''

"We have a lot of launches coming once the (Zvezda) service module gets up there,'' Goldin said. "We have a lot of hard work ahead of us.''

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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.

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