Construction around Indonesia’s new capital Nusantara has raised noise levels so high that the calls of rainforest birds and mammals are disappearing. A team led by Leah Varjacques recorded thousands of hours of audio from caves and treetops to preserve the sounds that guide local elders. The recordings show a marked decline in species diversity compared to historic data. If the soundscape is lost, so is a cultural navigation system that has guided generations. The study is limited to a single region and does not yet quantify how many species are displaced. Researchers and policymakers should treat these findings as a warning rather than a definitive verdict. sumber: aeon.co my other side: setyadi.com