Our hearing picks up a limited range of sounds, limits that were used successfully to keep teenagers from congregating outside British grocery stores by a device called the “teenage sound repeller." ...

Both light and sound travel as waves, with characteristics that allow people with typical vision and hearing to perceive and categorize them when they reach their eyes and ears: “That’s a small red ...

Several professional singers have flubbed the national anthem over the years. July 11, 2012— -- intro: Is our national anthem just too hard to sing? Singing "The Star Spangled Banner" has become ...