https://pinboard.in/u:bgporter/public/ recent bookmarks from bgporter 2009-03-26T14:38:25+00:00 http://www.sciencebuddies.org/ bgporter sciencefair project experiments https://pinboard.in/u:bgporter/b:87ad721fbfe8/ 2007-04-12T13:32:33+00:00 http://www.popsci.com/popsci/how20/8e69ee64bb7d1110vgnvcm1000004eecbccdrcrd.html bgporter sciencefair https://pinboard.in/u:bgporter/b:871bc5b2dd2d/ 2006-06-12T20:27:23+00:00 http://www.instructables.com/ex/i/662BADF4495E1029AC23001143E7E506/ bgportersciencefair https://pinboard.in/u:bgporter/b:491a27bc07bb/ 2006-04-20T15:24:22+00:00 http://www.weather-photography.com/techniques.php?cat=miscellaneous&page=tornado_machine bgportersciencefair https://pinboard.in/u:bgporter/b:89567ce3e063/ 2005-12-13T15:41:54+00:00 http://www.scitoys.com/scitoys/scitoys/electro/electro6.html bgportersciencefair https://pinboard.in/u:bgporter/b:c2c91b8c2b92/