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.

A Letter Home from Mir
News story originally written on October 28, 1997

The following is David Wolf's latest letter to those on Earth. The subject -- the Progress supply ship docking with the space station Mir.

It was almost eerie to see the robot ship loom in out of the darkness. Slowly close in andperfectly position for rendezvous and docking. The view from Anatoly's (our commander) teleoperated pilot station was as seen by the cargo ship. Closing in on this amazing space station. Its computer mind correcting for errors in the cross-hairs on the docking target, just as Anatoly would have done himself. It behaved almost human. Anatoly's hands were lightly poised on the remote control sticks ready to manually take over at the first sign of bad decision-making by the computer pilot. He and Pavel checked approach speeds and positions from the console. In their minds they had transported themselves and were sitting in the cargo ship, closing in on MIR. As I watched their moves and words, how confidently they worked together from training and experience, my few thoughts of what happened to Mike Foale a few months ago were quenched. Thunk. It hit pretty firmly - which is normal. No pressure sensations in my ears. Docking mechanism properly engaged. The silence of tuned nerves was broken by laughter and hand shakes. Supplies had arrived.

We each got a shoe-box-sized bag of gifts. I love all of them. Thanks. It was like an early Christmas. Lots of candy and fresh food for dinner. Some real delicacies. Haven't been gone long but I know I will be, so it still felt great. Pavel and Anatoly have been here for 2 months and the stuff really meant a lot. We all shared the food. One of those nights to remember in orbit. Our favorite Russian music, good friends, and food. And, we can fly and see the whole Earth. The laboratory is really coming together but more on that later.

Keep your wings rolling, - Dave

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