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.

Climate Change 2007: Mitigation of Climate Change

The planet is warming quickly as more greenhouse gases are added to the Earth’s atmosphere. The warming has large impacts on people, animals, and ecosystems.

How can we slow global warming?

A new report shares options for slowing the amount of global warming. The report was developed by the Intergovernmental Panel on Climate Change.

According to this new report, if we keep on living as we have been, the amount of greenhouse gases in the atmosphere will keep rising. The report highlights technologies that can help, such as switching energy sources from coal to cleaner gas, nuclear power, or renewable energy. Driving only fuel-efficient vehicles and using public transportation limit the amount of greenhouse gases too. And bicycling and walking are always good options. In buildings, having thick insulation and efficient appliances are good ideas.

Technologies that will be coming soon, within the next 10 to 20 years, are also highlighted in the report including new hybrid and electric vehicles, and efficient airplanes. The report also takes a look 20 to more than 50 years into the future at how and when we will be able to stabilize the amount of greenhouse gases in the atmosphere and the stop warming the Earth.

Last modified October 28, 2009 by Lisa Gardiner.

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The Winter 2009 issue of The Earth Scientist, focuses on Earth System science, including articles on student inquiry, differentiated instruction, geomorphic concepts, the rock cycle, and much more!

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