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.
McMurdo, Crary Lab center left, slope of Ob Hill in background. Photo taken in November 2003.
Click on image for full size
Image has been released into public domain (found on wikipedia.org).

Exploration of the Poles of the Earth

Polar exploration includes the physical exploration of the Arctic and the Antarctica. The Arctic is the area around the Earth's north pole and includes parts of Canada, Greenland, Russia, the United States (Alaska), Iceland, Norway, Sweden, Finland and the Arctic Ocean. In general, areas on Earth above the latitude of 66o33' N are considered part of the Arctic region (this line of latitude is often referred to as the Arctic circle). Antarctica is a bit more easily characterized as the southernmost continent or everything south of the Antarctic circle (66o33' S in latitude).

Humankind has always been driven to explore the unknown. Because of their extreme weather and dangerous oceans to cross, historically, the polar regions of the Earth proved to be hard places to reach. Though exploration of these regions has been going on since B.C. times, it wasn't until the last 100 years that many remote places were reached. Obviously, much exploration and study is yet to be done as permanent living stations and expeditions continue into the 21st century. Please choose any of the following links to explore more yourself!

Last modified June 18, 2007 by Lisa Gardiner.

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The Spring 2010 issue of The Earth Scientist, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!

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Ready, Set, SCIENCE!, by the National Research Council, focuses on K-8 science classsrooms. Check out the other publications in our online store, as well as classroom materials.

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