If aliens were to examine a human, they would think we were just slavish organisms designed to feed microbes and carry them around. Our bodies contain ten times more bacteria than cells , and there are an estimated 3.

Choosing between wild and farmed fish is often a dilemma for consumers.  Wild-captured fish cost twice as much as their farmed counterparts ; a difference that many believe is justified by their better taste and nutritional properties.

If you can't kill them, trap them. Such is the fate that scientists are reserving to pathogenic bacteria, such as the infamous E. coli .