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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

Sir Ernest Henry Shackleton was one of the famous explorers in the Heroic Age of Antarctic Exploration. He was of English-Irish ancestry and was born in Ballitore, Ireland on February 15, 1874. Like Amundsen, he dropped out of college to go to sea against the wishes of his parents.

In 1901-1903, Shackleton participated in the National Antarctic Expedition, also known as the Discovery Expedition which was named after their ship. This expedition was led by Robert Scott. In 1907-1909, Shackleton organized his own expedition, called the Nimrod Expedition, to the South Pole. The explorers reached a point only 180 km from the South Pole but had to turn back due to harsh weather, lack of food and loss of ponies that the explorers had used for transport. However, they were the first men to cross the Trans-Antarctic mountain range and set foot on the South Polar Plateau. They also located the Magnetic South Pole. Shackleton returned to England a hero and was knighted.

Shackleton's most famous expedition was the Endurance Expedition in 1914-1916. It was planned to be an attempt to cross Antarctica from the Weddell Sea south of the Atlantic, to the Ross Sea south of the Pacific, by way of the Pole. But in the Weddell Sea their ship was trapped and then crushed by the ice. Shackleton and five other men managed to cross 800 miles of treacherous seas in a small boat and reach the whaling station on South Georgia island, from where Shackleton organized a rescue operation to bring home the remaining men. This amazing feat became a subject of numerous books and movies.

Shackleton died in 1922 during another Antarctic expedition and was buried on South Georgia island.

Last modified June 23, 2007 by Julia Genyuk.

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