What were barcodes first used for?

More Questions:

March, April and May are the only months that have what?

What two animals are the symbols of the US Democrats and Republicans?

In Greek mythology Penthesilea was the queen of which people?

What mythological creature grew two new heads for each one that was cut off?

The composer Berlioz married Harriet Smithson in which year?

Sierra Leone is located on which African coast?

What do you call an animal that eats both plants and animals?

What is glass mainly made up of?

How many pounds of jet fuel does a passenger Boeing 747 use during take off?

What is missing from a navel orange?

What animated TV show featured characters that repeatedly said "Helllloooo Nurse!'

Which original "Star Trek" character was played by James Doohan?

Who played the title role in the 2005 film "Capote"?

Who was elected to the Senate seat vacated by New York Democrat Daniel Patrick Moynihan on January 3, 2001?

Beethoven's third symphony is named what?