Which four US states share a border with Oregon?

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What color is the supposedly cursed Hope Diamond?

Whose likeness is depicted on the Purple Heart Award?

What's the most common "singing membranophone"?

What is a parsec a unit of?

The Linke Scale is used to measure the blueness of what?

Which element appears tenth on the periodic table?

What is the only moon in our solar system to spin in a direction opposite of its planet's rotation?

What does LPG stands for?

Queen scored the 1981 song "Under Pressure" with the help of what British singer?

In ancient Japan, all people who gave massages had to be what?

What shortage killed over one million Irish people in the 1840s?

In which war was napalm first used?

Which event was Canada’s anthem, "O Canada", originally commissioned for?

Who made the song "Bad Case of Loving You" popular?

What was used for blood in Hitchcock's "Psycho"?