Constant city noise has been linked to long-term health problems, but it's hard to keep out of homes and businesses; low-frequency sounds such as traffic and construction propagate easily through ...

Ping pong balls are ace sound absorbers, reveals new research. The little plastic spheres can be simply adapted to provide cheap and effective noise insulation, say scientists. Previous studies ...

Silence is golden, or at least in certain circumstances it is certainly preferable. There are very few moments in our lives when there is true silence, with the buzz of electricity, ping of phones ...

Source of pulsing ‘sonar ping’ noise from Boeing spacecraft not yet been traced, but could be heard on the speaker. NASA's Boeing Crew Flight Test astronauts (from top) ...