After reading that the amphibian population and specifically ranavirus might be caused by humans it makes me sad but I can understand the situation. We can often do things with unintended consequences that are not noticeable in the beginning. This appears to be the thought here that maybe we have caused these amphibians to become sick because of carrying the disease in or perhaps genetic mutations. Either way, it is a sad situation that will hopefully be able to be reversed before it is too late but these types of things happen in our society without specific intention. I feel for the little froggies though and hope science can find a way to preserve them and their habitat.