Big Ben, the famous clock tower of the Houses of Parliament in Westminster, London, leans slightly. It tilts 0.26 degrees to the north-west. This was found during plans for the Jubilee Line extension.

A top-secret lab in the UK is developing the country's first quantum clock to help the British military boost intelligence and reconnaissance operations, the defense ministry said Thursday.

In the seventeenth and eighteenth centuries clock-making was a key European technology, and London was its cutting edge. As a maritime nation, the British were concerned with one time-keeping ...