There is a plant sitting in millions of homes right now — round, flat, quietly photosynthesizing — that has been solving a class of geometric problems that took human mathematicians centuries to formalize. Pilea peperomioides, the Chinese money plant, grows its leaves using a pattern called a Voronoi diagram. And it does this without a brain, without measurements, and without any conscious plan whatsoever.
Researchers at Cold Spring Harbor Laboratory have now mapped exactly how it works — and the discovery is reshaping how scientists think about the hidden intelligence embedded in living systems.
