Unlike the last test you took in school, this one is fast and easy—and protects you from harm. An electrician explains.

Here is a look at the life of Mohammed bin Salman, crown prince and prime minister of Saudi Arabia. Known widely by his initials MBS. MBS is the eldest son born to King Salman and his third wife.

The internet is full of intriguing, hilarious, and sometimes downright bizarre questions. But every now and then, a thread ...