The main causes of climate change are, and always have been, Milankovitch Cycles and the solar cycle. Cycles within cycles within cycles. Whether or not one believes that human activity is affecting the climate, all pollution, including carbon pollution, is a still major problem that needs to be addressed. Plastic pollution, I believe, is a more immediate issue and one that we can more easily do something about. Step 1-clean up the trash ridden cities. Tons of plastics run off into waterways whenever it rains in places like NYC, Philly, Camden, and Newark.