On: Climate change: IPCC report is 'code red for human...

[phkahler]

>> Governments need to tax CO2 emissions on the business side...

I'd say its easier to tax those who extract carbon from the ground (or import it). Far fewer companies.

(for this post I'm assuming the goal to reduce CO2 emissions is correct)

[gruez → phkahler]

You probably need a mix, because "extract carbon from the ground" wouldn't work for other sources (eg. methane or cement production).