The court has upheld a ruling preventing gas companies from prospecting on people's land without permission, but threw out a series of lawsuits complaining of the nuisance created by their operations.
The Trump administration has been systematically rolling back environmental regulations, and now carbon emissions are up across every sector in America.
Oil companies have contributed $8 million to fight against Measure G, a ballot measure in San Luis Obispo County that would block the expansion of local oil operations.