Flowers` secret signal to bees and other amazing nanotechnologies hidden in plants
(PHYSorg.com Biology)

Flowers have a secret signal that`s specially tailored for bees so they know where to collect nectar. And new research has just given us a greater insight into how this signal works. Nanoscale patterns on the petals reflect light in a way that effectively creates a `blue halo` around the flower that helps attract the bees and encourages pollination.