We filed an amicus brief in a case challenging the Bureau of Land Management's approval of over 300 oil and gas drilling permits in New Mexico. Our brief highlighted problems in the agency's analysis, which inappropriately minimized the climate impacts of new drilling through comparison to nationwide totals. We explained that the agency’s approach did not facilitate a rational analysis of the project's climate effects and failed to meet the National Environmental Policy Act’s requirement that agencies analyze the actual environmental impacts of their actions. In its decision ruling against the agency, the U.S. Court of Appeals for the Tenth Circuit cited our brief extensively and adopted many of our arguments against BLM’s comparison-based approach to assessing the significance of climate impacts.