If you're part of a class which is demonstrably harmed in aggregate by climate change (for example, owners of coastal property), you could hire lawyers as a class to sue those responsible. Probably even on a contingency basis.
Most people are not demonstrably harmed by climate change, and thus would have no standing to sue. Which is as it should be. If you can't prove that emitting CO2 is actually harmful, what justification do you have for imposing the proposed carbon tax? Other than raising general tax revenues, that is—but the proponents of carbon taxes claim that it's for the environment, not to cover a shortfall in the budget.
Most people are not demonstrably harmed by climate change, and thus would have no standing to sue. Which is as it should be. If you can't prove that emitting CO2 is actually harmful, what justification do you have for imposing the proposed carbon tax? Other than raising general tax revenues, that is—but the proponents of carbon taxes claim that it's for the environment, not to cover a shortfall in the budget.