A mutant seedling revealed how plant tissues scatter incoming light, allowing plants to sense its direction and move toward it. Introduction On a shelf lined with terra cotta pots, herbs bend their stems toward the nearest window. In a field of golden wildflowers, leaves rotate with the path of the sun. In a dappled forest, vines twine up trees, reaching ever upward and away from the dark. Since ancient times, plants’ ability to orient their eyeless bodies toward the nearest, brightest source of...