Acocrding to the Job One for Humanity plan, the fossil fuel reduction targets of 2025 will have to be met in order for a rise of 4˚C to not happen. Once carbon emmissions hit 425 ppm, the climate induced ecological collapse will start to accelerate further. There are twelve global crises that will be accelerating once the 425 ppm threshold is passed, which is expected to happen no later than December 31, 2024. More information on this plan is available at https://www.joboneforhumanity.org/world_s_most_critical_global_challenges.