Under both strict product liability and negligence theories, plaintiffs must establish proximate causation where there is a reasonable certainty that the defendant’s acts caused the injury. Several recent cases have emphasized the Daubert requirement that expert testimony supporting proximate cause for product liability claims must be non-speculative and backed by reliable, reproducible, scientific methodologies.

A recent decision by the Supreme Court of the United States—to deny requests from states and industry groups to stay enforcement of the EPA’s rulemaking on methane and volatile organic compound (VOC) emissions—was deemed a success by the EPA in its efforts to curb emissions from the oil and gas industry.