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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.
Conifer forests of the taiga biome
Click on image for full size
Image courtesy of Mikhail Dronov of Tomsk in southwestern Siberia

The Taiga Biome

The taiga biome is full of evergreen forests. These forests are sometimes called boreal forests. You can find taiga forests just south of tundra in the northern parts of Europe, Asia, and North America.

It is very cold and snowy in the taiga during winter. It is a bit warmer in the summer. During the summer the days are long, ice thaws, snow melts, and it is often rainy.

Conifer trees like spruce and fir live in the taiga. The trees grow close together. This protects them from cold and wind. There are a few deciduous trees that can live in the taiga like birch and aspen, but they are not common.

Many animals make their home in the taiga for at least part of the year. Some stay year-round. In the summer, there are lots of birds and insects. Many bird species migrate to the taiga and breed and nest there during summer. Other birds, such as sparrows and crows, stay in the taiga year-round. Mammals include plant eaters like rabbits and voles as well as meat eaters such as lynx, wolverines, and bobcats.

Last modified October 23, 2008 by Lisa Gardiner.

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