Printing house WS Bookwell has developed a tool for measuring a book's carbon footprint. The Ecocalculator provides information on how different printing methods and materials affect the amount of carbon dioxide and other emissions of a book.

 The Ecocalculator is a web based tool that uses information collected at WS Bookwell's printing plants. The calculation covers a book's life cycle from the harvesting of forest to customer's warehouse.

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 WS Bookwell is a part of Sanoma Group's Learning & Literature division.