21chemicals's Activity (8)
21chemicals added a news bookmark.Ever since J.K. Rowling planted the idea of an invisibility cloak in her blockbuster Harry Potter book series, scientists have been falling all over themselves to create a mater...Over 2 years ago
21chemicals added a news bookmark.She's done it again! This leather bound book one of only seven copies, handwritten by J.K. Rowling, the author who brought us "Harry Potter", sold for $4 million US Dollars at a...Over 2 years ago
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