Current Events

  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
  • Massive Tornado Outbreak on Tornado Alley
    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Io...Read more

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    Massive Tornado Outbreak on Tornado Alley

    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Iowa, Illinois and Missouri. On May 20th, a massive tornado struck Moore, Oklahoma, devastating communities - destroying over 100 homes and hitting two elementary schools and a hospital - with many casualties and deaths. Our thoughts are with our friends and colleagues suffering from these storms. For more on the May 20th storms, see the NOAA Storm Prediction Center Storm Report.
  • 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.
This photograph of Earth was taken from space. It shows the continent of Africa.
Courtesy of NASA

The Earth System Is Changing

Scientists have noticed that the Earth system is changing because of global warming. It is also changing because people have changed the way that land is used and have made pollution in the air, water, and on the land.

According to their research, as Earth continues to warm, ice of glaciers and sea ice will continue to melt, weather patterns will change, and some plants and animals will die while others will move into new areas. Climate change is changing the Earth system.

Scientists are also looking at how the parts of the Earth system change climate. The Earth reacts in many ways because of warming. Some reactions shrink the amount of warming. Other reactions cause even more warming. These reactions are called feedbacks.

Understanding the feedbacks of the Earth system is an area of active research in climate science. Hopefully this will bring new information about how the Earth works into climate models. And those models will allow us to better predict how climate will continue to change in the future.

Last modified November 26, 2008 by Lisa Gardiner.

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