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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 is an artist's depiction of the Mars 2003 rover and lander.
Click on image for full size
Courtesy of NASA

NASA Will Roam Around Mars with Rover
News story originally written on August 5, 2000

NASA has announced the next mission to visit the planet Mars. The Mars Exploration Program Rover will start its journey in 2003 and should reach the Red Planet in 2004. This rover will be a more advanced Sojourner Rover, which visited Mars in 1997, as part of the Pathfinder mission.

The rover mission was chosen over an orbiter mission. The rover will land on the planet and search around for evidence of water. The orbiter would have stayed in space while imaging Mars. Either mission will greatly increase our knowledge of Earth's neighbor. Now that the rover mission was chosen, scientists must decide if one or two rovers will be sent.

"We are evaluating the implications of a two-rover option," Dr. Weiler said. Dr. Weiler is the scientist that made the decision. "I intend to make a decision in the next few weeks so that, if the decision is to proceed with two rovers, we can meet the development schedule for a 2003 launch."

Scientists are very excited about this newest rover. Sojourner was only able to travel 100 meters over its entire mission. But the new rover will travel 100 meters each day. We will now study a lot more of the Mars surface and will hopefully find evidence that water once existed on Mars.

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