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.

Marina LaGrave

The ocean and diving has always been a part of my life! Since a young age, I loved and had a fascination with the natural world. My father was an admiral for the Venezuelan navy, so our family spent summers and every possible holiday in La Orchila, a Caribbean island that serves as a Venezuelan naval base that even has a pink sanded beach!

I spent every summer there for 18 years, and that free interaction with nature became my microscope and telescope to see and learn about our planet and space. We would swim freely aside all kinds of fish and watch turtles nest, and I even had a crab collection. It's what got me fascinated with nature and science and the wonders of the ocean. Ramon Llaneza, is my brother in law and a renown diving instructor. I met Ramon at age 18 and he diving instructor for Scuba Diving and I got most of my knowledge from his teachings. I am a IANTD & CMAS certified diver.

Now I live in Boulder, Colorado at the foothills of the Rocky Mountains and I am fond to hiking and skiing in Colorado, but every year, once a year, I join my family in Florida and together with my nieces and nephew I enjoy trips and keep learning and admiring the underwater and wonder of this magic world!

Last modified June 13, 2008 by Lisa Gardiner.

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