THE KNOWLEDGE FEED

The Rockola jukebox wasn't named for rock music, but rather for its inventor, David Rockola.

The Rockola jukebox wasn't named for rock music, but rather for its inventor, David Rockola.

"Hava Nagila" was first performed in 1918 at a celebration in honor of a British victory in Palestine during WWI.

"Hava Nagila" was first performed in 1918 at a celebration in honor of a British victory in Palestine during WWI.

Signs such as those that state “Not Responsible for Your Car or Its Contents” carry no weight in court; they are posted simply to discourage people from pursuing any legal action.

Signs such as those that state “Not Responsible for Your Car or Its Contents” carry no weight in court; they are posted simply to discourage people from pursuing any legal action.

5 Questions: Fabulous Fakes

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Name the Top 10 Tornado States

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On May 31, 1985, one of the largest tornado outbreaks in North America occurred, with 43 twisters crossing Ohio, Pennsylvania, New York, and Ontario. These areas don't normally get too many tornadoes. Can you figure out which ten states are hit the most?

Andre Agassi's father represented Iran in boxing in the 1948 and 1952 Olympics.

Andre Agassi's father represented Iran in boxing in the 1948 and 1952 Olympics.

To deter nativity scene theft, BrickHouse Security provides free GPS trackers that can be installed in Baby Jesus.

To deter nativity scene theft, BrickHouse Security provides free GPS trackers that can be installed in Baby Jesus.

Name Texas' 20 Largest Cities

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Last week, we asked you to name California's 20 Largest Cities. Today, the challenge moves a bit east to the great state of Texas. How many of the Lone Star State's 20 most populous cities can you name in just five minutes? A score of 10 or more correct (50 percent or better) should be considered a "win." Good luck!

One of the most interesting mysteries of Death Valley National Park is the sliding rocks at Racetrack Playa (a playa is a dry lake bed). These rocks can be found on the floor of the playa with long trails behind them. Somehow these rocks slide across the

One of the most interesting mysteries of Death Valley National Park is the sliding rocks at Racetrack Playa (a playa is a dry lake bed). These rocks can be found on the floor of the playa with long trails behind them. Somehow these rocks slide across the playa on their own, cutting a furrow into the sediment as they move. Nobody knows how they move!

Name the 13 Best-Selling Candies in the U.S.

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June is National Candy Month! To celebrate, we want you to name the top 13 candies (no gum or mints) in the United States based on annual sales, as reported by Businessweek. Good luck!

The two busiest commercial ports in the United States do not border the Atlantic or Pacific, but the Gulf of Mexico: They're in New Orleans and Houston.

The two busiest commercial ports in the United States do not border the Atlantic or Pacific, but the Gulf of Mexico: They're in New Orleans and Houston.

5 Questions: So Sad

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