Read this alarming story about frog populations getting the deadly virus due to garden ponds to some extent. I know we always or mostly mean well but this story amply displayed how when we interfere with natural order of things even with the best of intentions, we can make the matters worse. People were inadvertently spreading the virus beyond the natural reach of infected frog population which in turn was destroying other harmless and healthy frog groups. I think this is a great example of how we should always think twice before taking even the simplest benevolent action towards nature.