Our planet is speaking to us, if we would just stop and listen, says Trevor Cox, an acoustic engineer at the University of Salford in England.
Sonic Adventure
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Bitterns are shy, but have the loudest voice in the wetland. (Creative Commons)
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A sound engineer sets up to record the singing sand dunes in the Mohave Desert, California. (Trevor Cox)
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The grooves in this highway in Lancaster, California play an out-of-tune William Tell Overture. (Trevor Cox)
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A sign welcomes tourists to the musical highway in Lancaster, California. (Trevor Cox )