Let's Double Check That.

" Mary is the ace fact checker who not only identifies areas of concern, but also offers solutions. She can flag problematic sourcing and simultaneously locate alternative and more credible sourcing to use.

Mary also has a pulse on reading from a lens of sensitivity, and proposes language edits that enable more responsible storytelling. She is quick to learn a studio's tone and approach, works independently, but also knows when to ask for a second opinion. You can breathe easier knowing you've Mary as a fact checker."

- Lori Segal, Supervising Fact-Checker at Spotify, former Research Director at Teen Vogue & Allure. 

Selected Work

The New York Times

‘I Feel a Human Deterioration’

The Israeli writer Etgar Keret has spent the last few weeks trying to make sense of the violence and loss around him. So far, he can’t.


I worked for Dictators, Solved Murders, Conspiracy Theories, and more.  Here's an example of my fact-checking at Spotify.

Vox & New York Magazine

I regularly freelance with Kara Swisher's technology show "On" where she interviews the top minds in today's technology sector, authors, reporters, and politicians. 

The Wall Street Journal

The Hospital At The Center of Israel's War On Hamas. 

The Journal, a daily podcast about money, business and power. 

The Nation

I fact-check print & online stories for The Nation including “The Great Resignation” Is a Great Exaggeration By Ann Larson and Lauren Gill's "Easy Money"


Operation "Safe" Streets by Lauren Gill

"How Delaware’s most secretive police force plays fast and loose with our communities"

Snap Judgement

Campside Media

Meadowlark Media

Blue Wire Studios

I'm direct, self-sufficient and reaaally fun to work with. Over the last three years, I've developed a fact-checking method that makes my client's lives easier. I'm also happy to collaborate with other fact-checkers on projects. 

I attended the FSJ M.I.T. Fact-checking conference in 2022, and I created the group Fact Check Us and organize webinars and forums so a community of fact-checkers can talk about organizational processes, rates, and bounce questions off each other. We've worked with AIR Media to run virtual fact-checking conferences for fact-checkers around the U.S.

Using Format