Countries that innovate first get the new jobs, developing an economic edge over the C-free laggards that end up having to later import the technology.

Carbon-free energy is simply something we have to do. The time for talk is past. If we turn around net carbon emissions by 2020 rather than 2040, we get another 2° of fever rather than 3° - and that's a big difference.

It's going to be like herding stray cats, and the political leaders who can do it will be remembered as the same kind of geniuses who pulled off the American Revolution.

Our CO2 mixes with everyone else's within a year, then hangs around for centuries like a shroud.

Climate change has a very high procrastination penalty that just grows with each passing year of inaction - rather like what happens if you don't pay off your credit card. But for climate, there is no such thing as a fresh start from bankruptcy.

Unless we redesign our civilization in numerous ways, all of the science in the world won't save us.

You can always spot the pioneers by the arrows in their backs.