Carbon emission is only one of all our ecological concerns. I don't know why people only think about carbon. You can look for example at River plastic emission

Carbon emission is only one of all our ecological concerns. I don't know why people only think about carbon. You can look for example at River plastic emissions to the world’s oceans [1]. [1] https://www.nature.com/articles/ncomms15611 https://www.nature.com/articles/ncomms15611