Exciting news: metro.news has merged with metro.co.uk! That means that as well as keeping up with all the latest news and features you love from Metro Newspaper you’ll also be joining the 23 ...

The Revolt RV 400 is one of the first electric motorcycles to fall under the low-maintenance categories. Normally, the range is the biggest problem with electric vehicles, but the Revolt does ...

Basic electricity is described in many ways. When an electric circuit flows through a conductor, a magnetic field (or "flux") develops around the conductor. The highest flux density occurs when the ...