Nature provides one of the fastest ways to battle climate change. Reforestation combined with ecosystem-based forestry can together harvest over 20 billion tons CO2 each year.
That equal almost half of all human-caused greenhouse gas emissions. New forest management combined with protection provides a fantastic opportunity to start reducing the net emission of CO2.
NOTE: This DOES NOT replace the need to leave the fossil in the ground.
Link: https://www.pnas.org/content/pnas/114/44/11645.full.pdf