"Data correlating shape and settling across a broad range of natural, mutated, and artificial leaves support the fast-leaf-hypothesis: Deciduous leaves are symmetric and relatively unlobed in part ...

The feijoa, not the kiwi, is the unofficial fruit of New Zealand, but it remains unknown to much of the world.

Shape and symmetry help determine where a leaf lands — and if the tree it came from can recoup the leaf’s carbon as it decomposes.