Researchers take cues from insect communication methods to provide alternative data transmission.

Sending signals through the air may be among the oldest communication methods in human history. It’s practice is not the sole preserve of human species either, as African cave crickets communicate through pressurized rings of air similar to smoke rings. And amazingly this communication method may not be the sole preserve of biotic life for much longer.

The aforementioned insect communication differs from our use of smoke rings. Rather than rely on the visual presence of smoke the cricket:

repeatedly flings its wings forward to create tiny vortices of pressurized air. Like smoke rings, these bursts of air create a low-pressure region around their edges, causing doughnut-shaped rings to form in the air that can travel fairly long distances.

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