How carnivorous plants could give us self-cleaning, self-repairing walls

There's a long and storied tradition of scientists getting fantastic ideas from nature, as there are few finer testing labs than the requirements of natural selection. The newest breakthrough in materials science based on a plant is Slippery Liquid-Infused Porous Surfaces — or SLIPS. And it could one day give us… »9/23/11 3:08pm9/23/11 3:08pm