Time to get real with moderate centrists who believe in climate change but still think we can take a "middle ground" approach to addressing it:

30 years ago, a price on carbon would have been enough to move us incrementally and gradually to a decarbonized economy. Now we are in an acute emergency: we have about a decade left to forestall uncontrollable runaway global warming. A carbon tax, while welcome in the way that anything is better than nothing, is still woefully inadequate.

We need a massive, comprehensive, all-hands-on-deck mobilization of our entire country to transition rapidly and decisively off carbon emissions if we have any hope of saving the planet for our children and grandchildren.

No more triangulation, no more "grand bargain" with the fossil fuel industry. They need to be shut down, not bargained with. Oil executives who keep trying to obstruct the effort to save humanity are committing crimes against humanity and should be treated as such.

Folks, we have one chance to get this right.

Ryan McGreal