I wrote this five years ago on reddit on the same topic and it's too long to embed:

http://txti.es/ocean-acidification

TL;DR: [T]his isn’t a train that stops for anyone, regardless of all the radical idealism, all of the futurist woo, the green colored packaging or compact fluorescent light bulbs, or all of the liberal sentimentality and conservative denialism.

This is not a movie. There is not a plot line. There is no salvation at the end of the hour. You are not a survivor in the zombie apocalypse. This is real. There are no adults secretly or overtly in control waiting to step in. Superman isn’t coming to save us from ourselves. You are in the middle of an extinction event that just so happens to include you.