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sound waves

Technology

Mysterious sounds in stratosphere can't be traced to any known source

Solar-powered balloons floating 20 kilometres above ground have recorded inaudible low-frequency signals that have so far not been traced back to any known source

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Technology

Voice jammer stops anyone from recording you speak

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Artificial intelligence entity using voice to communicate

Technology

Ultrasound stickers could continuously image internal organs for days

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Detaching the bioadhesive ultrasound device from the skin
Assembly of segments using acoustic levitation

Technology

Acoustic levitation used to build complex structures in mid-air

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The sonic wonders of our world are under threat. We need to listen

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The sonic wonders of our world are under threat. We need to listen

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NASA plans to use sound waves to help astronauts pass kidney stones

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NASA plans to use sound waves to help astronauts pass kidney stones

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Male peacocks can make females' heads vibrate at a distance

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Male peacocks can make females' heads vibrate at a distance

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Mute male crickets are still trying to serenade females

Life

Mute male crickets are still trying to serenade females

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Artist’s impression of GJ273 star system

Space

We just sent a message to try to talk to aliens on another world

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