Imagine cruising down the open road, the hum of the engine beneath you, the wind in your hair, and the American landscape stretching out before you. Now, imagine that every sign you pass, every exit ...

Researchers investigating the evolution of leaves discovered a rare insight into leaf arrangement through 3D models of the ancient plant.

The spiral pattern of an Aloe polyphylla plant at the University of California Botanical Garden. Stan Shebs via Wikicommons under CC BY-SA 3.0 To the untrained eye, plants may appear to grow rather ...