Thanks for your responses to my naive question.
The anxiety of the effects of ultrasound waves on the health of human sperm
reminded me of the current mobile phone scare and general confusion
concerning the concentration of radio waves on the brain.
However, I suppose as radio waves are electromagnetic waves, not acoustical
waves, they are not the concern of the acoustic ecologist, unless of course
the radio waves are transposed into sound.
Regards
John.
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