As part of his Nobel acceptance speech, Al Gore said:
And most important of all, we need to put a price on carbon -- with a CO2 tax that is then rebated back to the people, progressively, according to the laws of each nation, in ways that shift the burden of taxation from employment to pollution. This is by far the most effective and simplest way to accelerate solutions to this crisis.
That's absolutely right. We should tax what we don't like -- carbon emissions -- and use the money to fund what we do like -- purchasing power for individuals.
And we should embrace a global government for the purpose of levying, collecting, enforcing and distributing this tax. Without one, it's hard to see how we effectively reduce global pollution that causes climate change.