Agencies discuss student comment in rulemaking on greenhouse gas emissions from automobiles.
Agency clarifies that it will not implement greenhouse gas regulations for at least one more year.
Groups challenge EPA’s reliance on scientific reports to find danger in greenhouse gas emissions.
Two more House bills aim to curb EPA’s regulatory authority.
The impacts of agency’s decision to end voluntary regulatory compliance programs may be difficult to evaluate.
Members of Congress invoke federal law to halt EPA’s regulation of greenhouse gases.