The New York Times reports on a nascent phenomenon of kids using a 17-kilohertz ring tone that adults can’t hear.
Somebody is bound to build a sensor for the teachers. Wonder what the dogs think?
The New York Times reports on a nascent phenomenon of kids using a 17-kilohertz ring tone that adults can’t hear.
Somebody is bound to build a sensor for the teachers. Wonder what the dogs think?
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