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https://www.quora.com/Is-it-possible-that-alien-creatures-can-hear-and-speak-with-radio-waves-instead-of-sound-waves-all-on-their-own-without-the-need-of-equipment-to-assist-them/answer/Yaakov-Mikhael-Liu?ch=10&share=03cc8193&srid=3PUOh