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The Swedish artist Erik Sjödin has been experimenting with cultivating Azolla, a moss-like water-floating fern, for food puposes. He started in late 2009 when he was first struck by the aesthetic qualities of Azolla, when he saw it at the Department of Botany at Stockholm University. After he found a Japanese report from JAXA, which pointed out that they were looking at Azolla as a key crop for…