Governments are a part of markets too, just too often monopolies. Handling of climate change is more of a symptom of the problems created by climate change, and the markets can handle it. We shouldn't assume that there is some fixable impediment to handling global warming. There isn't. The only way it will eventually get fixed is if technology gets advanced enough quickly enough. It may sound ironic, but those who care about global warming would best serve it by supporting the market economy, because that's the main source of technology

I wouldn't say capitalism is also cause of all our problems. Virtually all the shit existed before capitalism. From hunter-gatherers to the end of monarchism. Capitalism has been integral in making things far better than those times. It isn't a coincidence that when capitalism was adopted in the modern world, things got far better rapidly. It isn't a coincidence that when capitalism was rejected by the modern world, things went south. As far as I know, this is true of every region and every time