Is the Earth positively or negatively charged?

Natural Resources Canada and the Canadian Forest Service has a great site that explains lightning in just the right amount of detail and starts off with a brief overview of the surface charges.

The National Oceanographic and Atmospheric Association also has a really good web site on lightning in general. It includes lots of great advice on what to do in the event of lightning.

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The Blog was initiated as part of the inaugural "Sustainability Across the Curriculum" workshop, held at SMU on May 12, 2010. This is part of the Teacher Scholar programme for 2010-2011. If you have any posts, curriculum, ideas or inspired content that you would like to include, please send it to Dr. Cathy Conrad, the 2010-2011 Teaching Scholar, Associate Professor of the Department of Geography. I look forward to moderating this site and linking useful and relevant information. I hope you find it useful!



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