If Dr Hansen is right, we are already toast, since nothing short of major plague that kills 20% of the population is going to be enough to reduce emissions significantly in the next 8 years.

We can probably slow the growth of emissions.

With herculean effort we might be able to halt them at present levels.

But there is no way in hell we can significantly reduce them in only 8 years. Modern civilization simply doesn’t work that way. Paradoxically it requires energy to manufacture energy saving devices…until we have those devices we can’t really stop using the ones we have now.

None of which is to say that we can’t be vastly more efficient, and that we shouldn’t be making all due haste towards that goal … but 8 years is not enough.

( It *is* coincidentally the time in office of a two term president … mmmm. )

So … either Dr Hansen is lying, and we should ignore him … or he is telling the truth, in which case we are already doomed … and we should ignore him, since there is no point worrying about something you can’t do anything about.