As the Sun Awakens, NASA Keeps a Wary Eye on Space Weather

clipped from science.nasa.gov "The sun is waking up from a deep slumber, and in the next few years we expect to see much higher levels of solar activity. At the same time, our technological society has developed an unprecedented sensitivity to solar storms. The intersection of these two issues is what we're getting together to discuss." The National Academy of Sciences framed the problem two years ago in a landmark report entitled "Severe Space Weather Events—Societal and Economic Impacts." It noted how people of the 21st-century rely on high-tech systems for the basics of daily life. Smart power grids, GPS navigation, air travel, financial services and emergency radio communications can all be knocked out by intense solar activity. A century-class solar storm, the Academy warned, could cause twenty times more economic damage than Hurricane Katrina. Click on the image to play a 39 MB movie about space weather and NASA's heliophysics fleet. [more] http://www.nswp.gov/swef/swef_2010.html.

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Climate scientists withdraw journal claims of rising sea levels

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clipped from www.guardian.co.uk Study claimed in 2009 that sea levels would rise by up to 82cm by the end of century – but the report's author now says true estimate is still unknown Scientists have been forced to withdraw a study on projected sea level rise due to global warming after finding mistakes that undermined the findings. The IPCC said that sea level would probably rise by 18cm-59cm by 2100, though stressed this was based on incomplete information about ice sheet melting and that the true rise could be higher. Siddall said that he did not know whether the retracted paper's estimate of sea level rise was an overestimate or an underestimate. "Since publication of our paper we have become aware of two mistakes which impact the detailed estimation of future sea level rise. This means that we can no longer draw firm conclusions regarding 21st century sea level rise from this study without further work. "One mistake was a miscalculation

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