Specialists are the animals that remind us what an incredible fluke it is that our world exists at all; that the temperature is what it is, that the air we breathe is 21 percent oxygen. They remind us how much damage even the smallest changes to that system can cause and they show us how badly we're screwing things up.

No anti-slavery crusader aimed for a partial solution or settled on a regimen of interim targets. The fight to end slavery was a fight to end 100 percent of slavery for all time. In just that way, we can't settle for partial measures if we are going to win the war for our world. We need to fight for 100 percent sustainability, now.

The vision of the ideal life that we've been taught in the West, which is gaining ever more purchase in China and India and elsewhere, feeds the system we need to undo. Go to school in order to get a degree in order to get a job in order to earn money so you can try to buy happiness because your life sucks, then retire and die: this is not meaningful living.

What you buy doesn't make you cool, it makes you the opposite. Stop buying stuff just to have more stuff. Most of us have enough of everything already. Let's care for what we've got, instead, and dispose of our disposable society.

We are our own asteroid. Our consumption of fossil fuels has released--is releasing--a store of carbon into the atmosphere that has been accumulating for hundreds of millions of years. Corals, plankton, predators: everything in the ocean is screaming at us to stop. If we don't listen and take action right now, we could be witnesses to the death of most life on earth. We will be the cause of that death... We will have erased ourselves in a blink of geologic time.

There is simply no issue more important. Conservation is the preservation of human life on earth, and that, above all else, is worth fighting for.