Slip a Banana Peel in Your Drink For Purity : Discovery News

"I would want to know if a banana in Bangladesh works the same way as a banana in Brazil," he said. "Chemistry is tricky. I would want to be damn confident of a method of analysis before jumping on an action plan."

Read the full article: http://news.discovery.com/earth/banana-peels-water-purification-110323.html