Chronicling the passage of whales has led me to an understanding that we, as a species, now sand at a crossroads. We can face the possibility of our own extinction and work to avert it, or we can flow the more traditional path of earths organisms and fall blindly over the edge. If there's one trait that characterised human beings, it's the will to survive. This, I believe, will motivate us to work with the natural world rather than opposite it, which is all we need to do to give the children of earth - of all species - the opportunity to thrive.