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A large, cute, smiling green speckled sphere with pink cheeks floats in a sunlit forest, surrounded by sparkles, with a smaller similar sphere in the background.

A large, cute, smiling green speckled sphere with pink cheeks floats in a sunlit forest, surrounded by sparkles, with a smaller similar sphere in the background.

Once upon a time, high above a green forest, floated a tiny carbon atom named Cambria. Cambria was part of a carbon dioxide (CO₂) molecule drifting peacefully in the air. One sunny morning, a big leafy tree took a deep “breath” through tiny holes in its leaves called stomata, and—whoosh!—Cambria was pulled inside! Make Cambria round with a big smile and cute features See more