To stave off extreme climate change impacts that could displace millions of people, scientific data shows that greenhouse gas emissions need to fall fast. Emissions need to drop 43% by 2030 and then fall to net-zero by midcentury, in order to limit warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit).
https://www.npr.org/2022/05/02/1095097566/carbon-dioxide-removal-climate-emissions