Talk about science, is it not scientifically clear that we (mankind) are destroying the Earth? At this point do we really need more proof? So yeah you can argue about how many angels dance on the head of a pin but while you are doing that some of us are concerned with the wellbeing of the planet, of the future, and trying to do something about preserving it for our descendants.

If mankind's relationship with the ocean was an example of a well managed industry that knows its bounds and respects the natural "resource" that it farms in such a way as to maintain a healthy balance you might have a point. But the fisheries of the world have been depleted beyond reason, beyond what is healthy for the maintenance of the eco-system as a whole, and drastic measures are called for. To not see this, to not feel it in our bones, in our hearts, is a sign of the same callousness that has created the problem in the first place. That is the root of the problem.