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.

    Courtesy of Alison Lehnherr-George

From: Alison Lehnherr-George
Teotihuacan, March 13, 2006

The Pyramids of Teotihuacan

Today we had some time to do a little sight-seeing. We went to the pyramids of Teotihuacan. The name of the city and the pyramids was given by the Aztecs, but they are not believed to be the people who built the city. In this picture, Dr. Greg Huey and I are only about half way up the Sun Pyramid. Behind us you can see the Moon Pyramid. Both pyramids were very tall and the view was amazing. Because of the high altitude here in Mexico City (about 7,000 ft or 2,000 m), it took us a long time to climb to the top and we were constantly out of breath. Throughout the city, we were able to climb through various ruins where the people used to live and work. I also crawled through some very small tunnels. Not much is known of the people who created and used to occupy this city or what happened to them. Overall, it was an amazing experience to walk through a city that at its height of activity used to be one of the largest in the world.

Teotihuacan Website

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