Special bacteria-killing surfaces constitute a highly active area of research and development.

Strategies to construct them vary widely. One group has infused a slippery surface with molecules that disrupt bacterial communication. Others have shown that silver nanoparticle coatings can destroy bacteria. Yet another group used black silicon to create a surface that resembled a tiny "bed of nails" (nanopillars), which physically rip bacteria apart.

That latter example, which ...

Everybody carries them around these days. Those tiny little hand sanitizers certainly come in handy after a ride on the subway or a trip through the airport, and they fit conveniently into my European man-bag. (Okay fine, it's a purse. I carry a purse.)

The instructions on the bottle I am carrying (which, as it so happens, comes from Bath & Body Works and beautifully matches my European man-bag purse) say: "Rub a dime sized drop into hands." Most people hardly do even that. At most, people stingily squeeze the tiniest of drops onto their hands in order to make their travel-sized antiseptic last as long as possible. 

But new research shows this is hardly sufficient. Even the dime-sized...

swimming-pool-1262340-mIt s summer time and the living s easy. Time to fire up the BBQ, pull the summer clothes down from the attic (hopefully they still fit) and relax around the pool and if we are talking pools, than we also have to talk about chlorine.

Chlorine and pools go hand in hand. Any pool owner will tell you that keeping your chlorine levels (and the pH) right is a summer s long struggle, but also necessary. A lot of people wonder though what does chlorine really do for your pool and what does it really do to you, the swimmer?