https://www.sciencedaily.com/releases/2019/11/191111150643.htm

The ambitious initiative has increased visibility, but also led to disagreements among scientists over how much carbon can realistically be stored in soil.

In an opinion published this week in Nature Sustainability, a group of scientists argue that this disagreement is part of the normal scientific process. However, they posit, the public debate is undermining the potential for policymakers to implement policies that build soil carbon for other environmental and agricultural benefits.