Federal regulatory agencies have known for years the dangers that diacetyl exposure creates among workers in factories where bags of microwave popcorn are tested. The only agency to have taken any action, the U.S. Environmental Protection Agency (EPA), has kept its study of the chemical's impact on consumers secret except for sharing it with the popcorn industry. Now the first case of potential consumer illness from exposure to diacetyl has been documented.

The U.S. Environmental Protection Agency (EPA) has released a cost-benefit analysis for a proposed rule aiming to tighten the federal standard for human exposure to ground-level ozone, also known as smog. Before its release, the White House Office of Management and Budget (OMB) edited scientific language in the analysis in order to downplay the economic benefits of the proposed rule.

At a July 10 hearing of the House Committee on Oversight and Government Reform, former Bush administration Surgeon General Richard Carmona joined a growing list of officials to disclose the executive branch's political manipulation of science. Carmona's claims that agency science is being distorted for political purposes echoes charges leveled by recent whistleblowers from the Department of the Interior, the U.S. Food and Drug Administration, the U.S. Environmental Protection Agency (EPA) and the National Aeronautics and Space Administration.