Weather
Photo credits 5-9
6. "Purple Lightning" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaawYgCbfpmbVY2466>

7. "Big Lightning" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaagn758Rydl257>

8. "Cloud Lightning" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaagjn758Rudl257>

9. "Cloud" US National and Atmospheric Administration. June 4, 2002.
<http://gimp-savvy.com/cgi-bin/img.cgi?noaaD0XwM3829w211736>
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