PIERRE, S.D. (AP) — South Dakota is joining a multi-state lawsuit aimed at stopping federal regulators from making decisions that factor in the social cost that carbon and greenhouse gases have on the environment. The monetary figure is a factor in a wide variety of federal policy decisions, including Environmental Protection Agency regulations and government spending. Gov. Kristi Noem says South Dakota will join a legal challenge to an executive order signed by President Joe Biden in January that establishes a “working group” to further examine the financial value that society faces from climate change, the Argus Leader reports. The panel in late February issued a report setting the Social Cost of Carbon, or SCC, at $52 a ton.