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  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • 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.
This picture shows the International Space Station. An astronaut on the Space Shuttle took this picture in 2002.
Click on image for full size
Image courtesy NASA.

International Space Station

The International Space Station (ISS) is a large space station that orbits Earth. There are astronauts and cosmonauts living onboard the ISS right now. The ISS isn't completely finished, though. New sections will be added to the ISS in the next few years. Sixteen countries, including the United States, are working together on the ISS.

The first piece of the ISS was launched in November 1998. Several more pieces have been added since then. There is about as much room inside the ISS as there is inside a couple of school busses. The ISS orbits 354 kilometers (220 miles) above Earth.

The first crew of astronauts and cosmonauts started living on the ISS in October 2000. The crews do experiments to learn how people and other creatures are affected by living in space. They also learn how to make things in space, like larger crystals or rounder ball bearings. The crews also spend time studying Earth and figuring out what equipment is best to use for long trips in space. Each crew spends about six months on the ISS before returning to Earth.

Last modified May 10, 2004 by Randy Russell.

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