How are motorways and A-roads numbered?

SHORT ANSWER The low-numbered motorways (M1-6) and A-roads (A1-9) are used to cut the country into sections, and other roads

What is the Magnus Effect?

SHORT ANSWER The thing that causes a spinning football/tennis ball/baseball to swerve in the direction of the spin. FULL STORY

SHORT ANSWER In Britain, yes – as long as the name is made up of letters and is not “offensive”.

SHORT ANSWER Yes – although this doesn’t mean much in practice. FULL STORY By tradition, mute swans (the big white

SHORT ANSWER Charing Cross. To be specific, the place where a statue of King Charles I now stands. FULL STORY

SHORT ANSWER Because the sun’s white light is made up of a rainbow spectrum of colours, and the short wavelength