The Greenwich Time Signal, popularly known as “the pips,” is a series of six short tones broadcast by many BBC radio stations at the end of each hour to mark the precise start of the following hour. Devised by Astronomer Royal Frank Dyson in 1924, the signal consists of six pips that occur on the five seconds leading up to the hour, with the beginning of the sixth pip marking the actual moment when the hour changes. After nearly 90 years of marking time, why might the pips soon be silenced? Discuss