In October 2021, Mongabay reported on Facebook’s announcement that it would block the buying and selling of land in ecological conservation areas across Facebook, Instagram and WhatsApp. The move followed a BBC investigation that found protected Amazon rainforest lands, including Indigenous territories and national forest reserves, were being advertised on Facebook Marketplace.
Mongabay’s coverage helped bring the issue to an environmental audience and highlighted the risks these listings posed to forests, protected areas and the communities connected to them. The article also raised questions about whether Facebook’s new policy would be effective. Experts quoted in the story noted that without requiring sellers to provide precise location information, the platform’s ability to identify illegal land sales could remain limited.
A key concern raised in Mongabay’s coverage was whether Facebook could enforce the new policy without reliable location data from sellers. The company said it would compare listings against a protected-areas database, but experts warned that such screening would be limited if listings did not include precise geographic information.
Impact
In November 2026 Mongabay received an email directly from a Meta employee who shared that Mongabay’s reporting on the issue helped inform the company’s internal response: “Your 2021 coverage (“Facebook to block illegal sales of protected Amazon rainforest lands”) brought urgent global attention to a shocking abuse: protected Amazon rainforest, including indigenous reserves and national forests, being sold on Marketplace in plots often without ownership proof. Your reporting documented a major platform-integrity failure that was fueling record deforestation and it directly spurred Meta to adopt new policies and technical safeguards.”
According to the source, Meta worked with the United Nations Environment Programme and their geospatial experts to integrate the World Database on Protected Areas into their machine learning models and detection pipeline that resulted in automated systems capable of flagging listings that appeared to overlap with protected areas.
“Today these systems scan millions of listings daily and automatically remove hundreds of thousands of violating posts every month, many posted by sophisticated actors trying to sell rainforest land, endangered species, or other prohibited items,” the source said.
Mongabay hasn’t confirmed the accuracy of the systems reportedly developed, but the account offers a window into how public-interest journalism can contribute to institutional responses by documenting environmental harms, exposing accountability gaps and keeping attention on powerful platforms whose policies can affect ecosystems and communities far beyond the digital sphere.
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Banner image: Amazon Rainforest in Peru. Photo by Rhett A. Butler/Mongabay.