Superbugs that can survive antibiotics have become a major concern.
Now nature has gone a step further: some microbes lunch on antibiotics

http://www.treehugger.com/natural-sciences/soil-microbes-go-beyond-antibiotic-resistance-eating-antibiotics.html?utmsource=feedburner&utmmedium=feed&utmcampaign=Feed%3A+treehuggersite+%28Treehugger%29