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Stanford researchers discovered how plant cells decide whether to form breathing pores based on size and neighbor signals.

Trees supply leaves with water because of a decrease in hydrostatic or water pressure into upper, leaf-bearing parts called crowns or canopies. This hydrostatic pressure difference "lifts" the ...

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All tree leaves exhibit margins—the blade-like edges of the leaves—that are either serrated or smooth. Leaf margins can be finely classified based on at least a dozen unique characteristics.