Screaming volcanoes  JUL 16 2013

Volcanoes "scream" before they erupt. And they also have a heartbeat of sorts. Listen to these surprisingly intense sounds emitted by a volcano in Alaska before it erupted. The first recording condenses 10 minutes of audio into 10 seconds, so you can hear the pre-eruption scream:

The second recording is of 10 hours of pre-eruption mini earthquakes condensed into one minute of audio.

The pause right before the eruption is Mother Nature dropping the beat. (via @DavidGrann)

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