By Joseph Picard | September 30, 2010 3:35 PM EDT
The philosopher Frederick Nietzsche once famously said, "That which does not kill me, makes me stronger."
That may or may not be true for human beings. It is certainly true for bacteria. The superbugs are among us and they are not leaving. Indeed, they are growing stronger.
Chickens drink water next to calves on a farm near Poolesville, Maryland, October 19, 2005. Experts say the misuse of antibiotics for farm animals is helping to create superbugs.