In 1997, NOAA recorded a sound louder than any known animal

In the summer of 1997, NOAA's underwater microphone network — a Cold War-era array of hydrophones originally built to track Soviet submarines and later repurposed to monitor earthquakes and whale migrations — picked up something strange off the coast of southern Chile. — Read the rest The post In 1997, NOAA recorded a sound louder than any known animal appeared first on Boing Boing.