Is there really a practical solution to global warming?

I mean, even if it does gain momentum and many countries are willing to impose taxes to reduce their carbon emissions, there are still countries who aren't willing to impose carbon taxes on its populace to reduce their emissions. No matter how hard or successful these countries become by reducing carbon taxes, there is nothing they can do about regulating another country's pollution or carbon emissions. Seeing as most people and governments are not and will never be for a one-world government or care about future generations, is there even a practical solution to global warming? Will global warming mark the end of the human race? I sure hope another intelligent and sentient species evolves and takes our place as the care-takers of earth, and that they aren't as naturally selfish and greedy as their predecessors (humans).