What is a bellwether?

More Questions:

What color is pure caffeine?

In the game of 9-ball, the pool balls are initially placed in a grouping of what shape?

What is the subtitle of the traditional version of the board game "Monopoly"?

During what war was the novel "Catch-22" set?

In "Archie" comics, what character's real first name is Forsythe?

Which country's capital city lies on the River Aar?

Which US state is nicknamed the "Silver State"?

In what US state is Dulles International Airport located?

With what is sulfur and saltpeter mixed to make gunpowder?

What famous movie actor got his start playing the first openly gay nationally broadcast TV character, in the late 1970's?

Apart from the piano, what other musical instrument does Dr. Sheldon Cooper from the TV show "The Big Band Theory"?

Who provided the original voice for Yogi Bear?

Which country, that ceased to be a US territory in 1946, celebrates July 4 as its "Republic Day"?

In Roman numerals, what number does "D" represent?

What band released their 10th studio album under the name "Back to Us"?