(NEWSER) – Congratulations, environmentalists, tree-huggers, and people who enjoy breathing oxygen: the Earth has seven times more trees—approximately 3 trillion—than previously estimated, according to a new study in Nature.

Scientists from around the world created the first "data-driven global tree census" by combining satellite images with tree counts from around the world, coming up with an estimate that amounts to about 422 trees per person, Gizmodo reports. The most tree-dense forests (nearly 25% of all trees) were in North America, Scandinavia, and Russia, while the most trees (more than 40%) were found in tropical and subtropical forests, notes Nature.

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