News
Comment Submitted to EPA on Proposed Ethylene Oxide Rule
On May 1, 2026, Dr. H. Christopher Frey submitted a public comment to the U.S. EPA (Docket EPA–HQ–OAR–2019–0178) regarding its proposed reconsideration of National Emission...
Comment Submitted to EPA Highlights Concerns Over Cancer Toxicity Findings in Formaldehyde Assessment
Dr. H. Christopher Frey, former U.S. EPA Assistant Administrator of Research and Development, submitted a formal public comment on February 2, 2026 to the U.S....
Request for Correction: U.S. Department of Energy Climate Working Group Report
The EPA’s proposal to rescind the greenhouse gas endangerment finding is based in part on a new Department of Energy report written by five people, named as...
EPA’s Proposal to Eliminate Its Office of Research and Development Will Affect You
[Updated 5/2/26] This blog is a one-stop shop related to the elimination of the U.S. Environmental Protection Agency’s Office of Research and Development and its...
Looking at EPA’s IRIS: The Manufactured Toxic Toxicity Controversy that Shouldn’t Be
The U.S. Environmental Protection Agency’s Integrated Risk Information System (IRIS) program develops human health toxicity assessments of chemicals released into the environment by a wide...
EPA’s Research Office is “a unique national asset”, according to former leaders spanning four decades
On Earth Day, April 22, 2025, six former assistant administrators of EPA’s Office of Research and Development sent a letter to members of the Senate...
EPA must use the best available science − by law − but what does that mean?
On April 7, 2025, Dr. Chris Frey published a news and analysis piece via The Conversation that explains what “best available science” means in the...
Peeking Behind the Invisible Curtain of EPA’s Integrated Risk Information System (IRIS) Program
[Updated 3/26/25] If you read some media, you’d think that EPA’s Integrated Risk Information System (IRIS) program is a massive failure. The IRIS program is...
Frey Message to Federal Employees
This message was originally posted on LinkedIn in late February of 2025. To my friends and colleagues at EPA/ORD, EPA broadly, and the federal family:...
Frey Shares with CNN Importance of Best Available Science at U.S. EPA
On January 28, the U.S. Environmental Protection Agency (EPA) announced that it was dismissing all of the members of its Science Advisory Board (SAB) and...