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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.
Photo of Ernest Shackleton
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Public domain image from NOAA photo library

Ernest Shackleton

Ernest Shackleton was a famous explorer of Antarctica. He was from Ireland, but spent much of his life on the seas.

In 1907-1909, Shackleton led his own trip called the Nimrod Expedition to the South Pole. The explorers almost made it to the South Pole, but had to turn back because the weather got so bad and they didn't have enough food. They were the first men to locate the Magnetic South Pole. Shackleton returned to England a hero.

Shackleton's most famous trip to Antarctica was the Endurance Expedition in 1914-1916. The group tried to cross Antarctica by way of the Pole. Halfway through their trip their ship was trapped by the ice. Shackleton and five other men crossed 800 miles of dangerous seas in a small boat and reach the whaling station on South Georgia island. There Shackleton organized a rescue trip to bring home the rest of the men.

Shackleton died in 1922 during another Antarctic trip. He was buried on South Georgia island near Antarctica.

Last modified June 23, 2007 by Julia Genyuk.

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