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.
An illustration of the rare ivory-billed woodpecker.
Click on image for full size
USFS

Where’s the Woodpecker? Rare Bird Sighted for First Time in 60 Years!
News story originally written on May 2, 2005

Nobody had seen North America’s largest woodpecker in 60 years. This species, called the ivory-billed woodpecker, is very rare and scientists thought it was probably extinct. These woodpeckers are large but they are not easy to find because they are shy and live deep in forests. But recently a bird has been spotted in eastern Arkansas, not far from where it was last seen 60 yeas ago!

These woodpeckers, and about 85 other bird species in North America, make their homes in dead trees. But people often cut dead trees down because they are not as beautiful, because they are homes to insect pests, or because they are fire or safety hazards. So, there are often few places left for these birds to make their homes. Additionally, three quarters of the forest in the Southeast United States where the ivory-billed woodpecker lives has been cut down in the past 120 years.

Last modified May 2, 2005 by Lisa Gardiner.

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