Her articles have appeared in The New York Times, Rolling Stone, Mother Jones, Glamour, Reader's Digest, Slate, Ms., and San Francisco magazine.
Her radio commentaries have been featured on NPR's All Things Considered and PRI's Living on Earth programs.
Mieszkowski is a senior reporter for Reveal from the Center for Investigative Reporting, winning (along with Lance Williams and Michael Corey) the 2017 Kevin Carmody Award for Outstanding In-Depth Reporting from the Society of Environmental Journalists for the Reveal News four-part investigative series "The Wet Princes of Bel Air",[3][4] and the 2020 Gerald Loeb Award for Audio for "Amazon: Behind the Smiles".
[5] When Mother Jones magazine won the 2009 Utne Independent Press Award for environmental coverage, judges cited Mieszkowski's piece about Wegmans, "Big Green Brother".
[8] Mieszkowski contributed reporting and production assistance for the Reveal podcast "Mississippi Goddam: The Ballad of Billy Joe", which was nominated for a Peabody Award in 2021.