Ahead of the 40th anniverasry of Earth Day in April, Hachette Digital has released the title as a digital picture book.

The app features bold illustration from the original picture book as well as many additional features including fully synced audio, interactivity, a record your own Audiobook option adn a visual table of contents.

The Earth Book is available in the iTunes app store, where it joins over 20 of Todd Parr's children's books, including The I Love You Book, The Peace Book, and It's Okay to be Different.

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