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

    x

    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

    x

    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

    x

    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.

The Arctic Ocean

If you traveled to the far north, the most northern place of Earth, you would find the Arctic Ocean there. It is Earth’s smallest ocean. At the edges of the Arctic Ocean are the northern parts of Europe, Asia, and North America.

The ocean water is so cold that ice forms at the top. The ice is called sea ice. More sea ice forms during the winter, when it is the coldest. In the summer, when it is warmer, much of the sea ice melts. Because our planet is getting warmer, the amount of sea ice that stays around all year long is shrinking. In fact, at some point in the next few decades there will be no more sea ice during summer in the Arctic Ocean.

Many animals live in the Arctic Ocean. Large mammals such as walruses and whales live there, and so do smaller animals like fish and invertebrates. Tiny marine plants called phytoplankton live there too. There are species of algae and small animals that live within the sea ice and small animals that live underneath the sea ice. There is still much that is not known about the organisms that live within and under the Arctic sea ice.

Last modified January 26, 2011 by Jennifer Bergman.

Shop Windows to the Universe Science Store!

Cool It! is the new card game from the Union of Concerned Scientists that teaches kids about the choices we have when it comes to climate change—and how policy and technology decisions made today will matter. Cool It! is available in our online store.

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

The Arctic: Earth's North Polar Region

In the Arctic, you will find the Arctic Ocean surrounded by the continents of Europe, Asia, and North America. You will find the geographic North Pole and the magnetic North Pole there; both are in the...more

Sea Ice in the Arctic and Antarctic

Sea ice is frozen seawater. It floats on the oceans that are in Earth's polar regions. The salt in the seawater does not freeze. Very salty water gets trapped in the sea ice when it forms. The pockets...more

Arctic Ocean Currents

Do you want to learn about how water moves through the Arctic Ocean? Then put your finger on the map on this page. Start on the blue line to the far left of the map. This is where water enters the Arctic...more

Methane Is Being Released Much Faster Than Previously Thought from the Arctic Ocean

Natalia Shakhova and Igor Semiletov, scientists from the University of Alaska Fairbanks, have studied a section of the sea floor of the Arctic Ocean called the East Siberian Arctic Shelf. The results of...more

Polar Bears on Thin Ice

Polar bears live in one of our planet’s most extreme environments, the Arctic . They thrive in the freezing cold. But because of global warming, polar bears might be in trouble. Scientists are studying...more

The Warming Arctic

The climate had become warmer during the past few decades in the north polar region . Temperatures are rising twice as fast as they are elsewhere in the world. Warmer temperatures cause other things to...more

Arctic Cultures

Inuit Inuit people live in the chilly northern parts of Canada, Alaska (USA), Siberia (Russia), and Greenland. There are many different groups of people in this large area. Most have similar ways of living...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF