Nanotechnology can be risky, but no one is regulating its use Thanks to nanotechnology, that allows grinding particles to atomic levels, you now have face creams that spread so smoothly on your skin that only a transparent sheen is visible, no layers. While that seamless make-up is desirable, cosmetics using such finely ground particles, called nanoparticles, might not be as harmless as they

observing rose petals with water droplets glittering in the sunshine, some researchers in China wondered why the water droplets stuck to the surface of the petal. Even when they turned the flower