http://heyhelen.com Science Writer Wed, 01 Feb 2012 14:17:06 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 http://heyhelen.com/2009/02/paper-balloon/ http://heyhelen.com/2009/02/paper-balloon/#comments Thu, 26 Feb 2009 19:37:38 +0000 Helen http://heyhelen.com/?p=125 I just came across a charming story in Air & Space magazine. It’s by Don Piccard, an American balloon pilot and member of the Piccard dynasty of Swiss balloonists. He writes about this time in 1947 when he flew a Japanese balloon across a bit of Minnesota.  It was made from mulberry bark paper and had carried a bomb across the Pacific during the war. The Japanese sent 9,000 balloon bombs off in this direction, but they didn’t quite work out as planned.

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