Long before human ears existed to receive them, the forests of the Jurassic hummed with insect calls that have been silent for 170 million years. By studying fossilized wings from Inner Mongolia and applying biomechanical modeling, an international team of researchers has reconstructed that ancient soundscape — revealing not the roars of popular imagination, but precise, high-pitched whistles shaped by the eternal pressure of predation. It is a reminder that the past was never truly silent; we simply lacked the instruments to listen.