Feedbacks are processes that reinforce each other, and can become irreversible, run-away climate change, regardless how much we cut carbon emissions.

 Examples are melting sea ice and glaciers. The Arctic is getting hotter at a faster rate than all worst case predictions. Source: University of Copenhagen, August 2020

Smoke from the Australian wildfires circles the entire globe. The average area burned in California has increased fivefold since 1972.