The best way to keep carbon in the soil is to not dig it up. Soil is alive and digging destroys the life and the natural systems of nutrition in the soil.
Training a Chat Bot about Climate Solutions.
What kind of a water system could be designed to control floods, and move water to wherever it is driest using siphons or bell siphons and/ or something like drilling tunnels through mountains? Ones that are similar to the systems for underground mining, or those used to build underground bases....