NEW YORK (AP) - Scientists say some flowers have found a nifty way to get the blues.
They report that the flowers create a blue halo, apparently to attract bees for pollination. Bees are drawn to the color blue, but it's hard for flowers to make that color with pigment.
The halo appears when sunlight strikes a series of tiny ridges in thin waxy surfaces of some flowers. The ridges alter how the light bounces back, which in turn produces the blue.
People can see the halos over darkly colored areas of these flowers if they look from certain angles in sunlight. Some species of tulip, daisy and peony are among the flowers that make the halo.
The research, which included experiments with bees and artificial flowers, was published Wednesday by the journal Nature.