Standing in front of the cashier in the take-out line, you tell them your name so you can pick up that pizza you called in 20 minutes ago. The confused cashier tells you, “Hmm, I don’t have an order ...

D as in "Dora" — or "David"? The Nazis had eliminated Jewish names from the German spelling alphabet. The names are to return, at least symbolically. It is a common situation during a phone call: the ...

Every time an aircraft checks in with air traffic control, pilots identify themselves using a unique call sign, something like “Delta November Three Seven Two,” not “DN372”. They also exchange ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Scientists have ...