The world's busiest airport plans to roll out a long-awaited step in its environmental efforts by requiring concessionaires to go Styrofoam-less and to use compostable materials starting in October.

The materials concessionaires use will have to be certified by the Biodegradable Products Institute or accepted by Cedar Grove Composting.

Some concessionaires have already stopped using Styrofoam, while others will need to convert their materials by the deadline.

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Tim and Sheri Lilley, father and stepmother of Flight 5342 First Officer Sam Lilley, and Tiffany Gibson, Sam’s sister, attend the first day of the NTSB fact-finding hearing on the Jan. 29th mid-air collision between American Airlines Flight 5342 and a United States Army Sikorsky UH-60 Black Hawk helicopter near Ronald Reagan Washington National Airport in Washington, DC on July 30, 2025. (Craig Hudson for the AJC)

Credit: For the AJC

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Angie McBrayer, ex-wife of James Aaron McBrayer, leans her head on her son Sam McBrayer as she and her three children and two grandchildren (from left) Jackson McBrayer, 3, Piper Jae McBrayer, 7, Katy Isaza, and Jordan McBrayer, visit the grave of James McBrayer, Thursday, November 20, 2025, in Tifton. He died after being restrained by Tift County sheriff's deputies on April 24, 2019. His ex-wife witnessed the arrest and said she thought the deputies were being rough but did not imagine that McBrayer would die. (Hyosub Shin/AJC)

Credit: HYOSUB SHIN / AJC