Penn researchers grow liquid crystal 'flowers' that can be used as lenses

A team of material scientists, chemical engineers and physicists from the University of Pennsylvania has made another advance in their effort to use liquid crystals as a medium for assembling structures.

Flowers use electrical signals to summon bees

Flowers 'advertise' the presence of nectar to bees using electrical signals, say University of Bristol researchers, by indicating whether they've recently been visited by another bee.