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Elephants are able to communicate using their trunks, but they have a second way of sending signals.
Naturepedic reports that various types of color noise, like white, green, pink, and brown, can aid sleep by masking disruptive sounds.
HearingLife reports noise exposure risks for first responders, causing long-term hearing loss that impacts job performance and public safety.
Chinese researchers tested whether a person closing their eyes really can hear better in noisy environments.