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

The real focus needs to be on political action to stop this runaway train, real soon.

Anyone who would tackle our current addiction to fossil fuels is going to have to maneuver around denial.

Stopping emissions growth represents the most minimal of do-something responses.

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.

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.

Since Serengeti-scale savanna scenes are only one or two million years old, our earliest after-the-apes ancestors didn't move into this scene so much as they evolved with it, as the slower climate changes and uplift produced more grass and less forest.