Merchandise
The popularity of the television series around the world translated into strong sales of associated Planet Earth merchandise. In the USA, it became the fastest and best selling documentary DVD in the Discovery Channel's history, and the high-definition (HD) discs generated US$3.2 million in sales in just two months. By the end of 2007, US sales had topped 3 million units, making it the highest grossing HD title and one of the top ten DVD titles of the year.
In addition, the brand was licensed to other companies to produce children's books, calendars, a board game, jigsaws, stationery, cards and more.
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