Challenging EPA’s Refusal To Limit Carbon Pollution

This case study describes Earthjustice's legal efforts to compel the U.S. Environmental Protection Agency (EPA) to regulate carbon emissions from motor vehicles under the Clean Air Act, leading to a landmark Supreme Court ruling and the subsequent establishment of federal carbon pollution limits.

• In the 2007 case Massachusetts v. EPA, the Supreme Court ruled that carbon emissions qualify as "air pollutants" under the Clean Air Act and determined that the EPA is required to set limits on such pollution if it threatens public health or welfare.

APA

Earthjustice (2005). Challenging EPA’s Refusal To Limit Carbon Pollution. https://earthjustice.org/case/greenhouse-gases-global-warming

Chicago

Earthjustice. Challenging EPA’s Refusal To Limit Carbon Pollution. 2005. https://earthjustice.org/case/greenhouse-gases-global-warming.

Wikipedia

{{cite report |author=Earthjustice |title=Challenging EPA’s Refusal To Limit Carbon Pollution |date=6 July 2005 |url=https://earthjustice.org/case/greenhouse-gases-global-warming |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{earthjustice2005challenging, author = {{Earthjustice}}, title = {{Challenging EPA’s Refusal To Limit Carbon Pollution}}, institution = {Earthjustice}, year = {2005}, month = jul, url = {https://earthjustice.org/case/greenhouse-gases-global-warming}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }