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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 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.

1998 Leonids Meteor Shower
News story originally written on November 7, 1998

The Leonids meteor shower is expected to reach its peak intensity during this year and next year on November 17/18th. The best show will be seen this year in Asia and next year in Europe and Asia. During both years any place in the northern hemisphere will see a larger-than-normal display.

The meteors in the Leonids shower are pieces of the comet Temple-Tuttle. The comet's orbit brings it near the sun every 33 years. When it approaches perihelion pieces of it break off and spread out through the comet's orbit. We see the pieces of the comet as a meteor shower when the Earth passes through the comet's orbit, as it will on November 17th.

The name "Leonids" comes from the constellation Leo. The meteors appear to orginate from a point in the constellation. This point is called the radiant because the meteors seems to radiate from it.

The best time to view the meteor shower is in the early morning of the 17th/18th local time. The intensity will increase during the night and will be most intense just before dawn.

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