Well it seems obvious it's Capitalism's fault, because when you look at the environmental record of the major non-capitalist states such as the USSR and Communist China, you see that... er... um... never mind.
After all it is also Capitalism that is giving us the tools to fight global warming and pollution - solar and battery technology, wind, tidal, hydroelectricity, biodegradable plastics, highly efficient self-driving electric vehicles - getting rid of Capitalism isn't going to make all our problems go away with it. Capitalism is at it's core about individual ownership, freedom and responsibility. These are not bad things.