The Amazon rainforest is hiding an ancient secret – and scientists now know what it is1 report from 1 outlet in 1 language · first reported 2026-10-02 14:30 UTC · updated 2026-10-02 14:30 UTC · JSONEnvironmentAmazon rainforestReportsThe Amazon rainforest is hiding an ancient secret – and scientists now know what it ishistoryextra.com · en · 2026-10-02 14:30 UTC