Press bravely onward! - not in vainYour generous trust in human kind;The good which bloodshed could not gainYour peaceful zeal shall find.
That's what the best global conservation organisations and the American government (and other environmentally inclined governments, such as Sweden and the Netherlands) are doing: protecting the remaining wild environment. This is the equivalent of getting a patient to the emergency room - keep them alive and then figure out how to save them.