Some people need to realize that climate change has always existed on earth since the forming of our planet, besides the political fuss its also just a scientific fact and it just might be of importance to limit our minor or big impact on it since it would be hard for humanity to adapt on a grand scale if temperatures change drastically in a short timeframe . "Reversing climate change" is a weird term since its just an ongoing forever happening thing but it could go slower .
It might be more stable then we think it is but its just good to be sure and live greener and healthier.
It's true that climate change happened in the geologic past. But usually over tenthousands of years, not in decades. Such fast change never happened before.
EDIT: Image to big to embed it in the post, but this shows in a pretty good way, how much faster we are warming the earth: https://xkcd.com/1732/