52% knows the answer to this question: "The natural depletion of what is responsible for outward signs of aging? "

And do you know the answer to this one? "Facundo Bacardi founded a distillery in Cuba in the 1860s, creating a more upscale version of what drink by filtering it through charcoal?"

34% knows the answer to this question: "What is a yak classified as? "

And do you know the answer to this one? "Which of these continents has a polar climate zone?"

75% knows the answer to this question: "Which iconic VW model rolled off the production line in Germany for the last time in January 1978? "

And do you know the answer to this one? "Who sang the famous song "Sunday, Monday or Always" (1943)?"

69% knows the answer to this question: "What is the position from which the viewer looks at an object or visual field? "

And do you know the answer to this one? "Ulrike Meinhof was an extremist and terrorist from which country, active in the early 1970s?"

93% knows the answer to this question: "Toxoplasmosis is an infection which can be picked up from which domestic pet? "

And do you know the answer to this one? "The meniscus is located where in the human body?"

76% knows the answer to this question: "John McCain was one of the many Americans who involuntarily spent time at Hoa Lo, to which they gave what nickname? "

And do you know the answer to this one? "Which musical was subtitled "The American Tribal Love-Rock Musical"?"

48% knows the answer to this question: "Which musical was based on Cervantes' novel "Don Quixote"? "

And do you know the answer to this one? "Gerald R. Ford International Airport is located in what U.S. city?"

50% knows the answer to this question: "High strength in tension is a good property for a material used to make what? "

And do you know the answer to this one? "Which of these is a type of plier, but not a type of shoe?"

76% knows the answer to this question: "What U.S. state is nicknamed "The Lone Star state"? "

And do you know the answer to this one? "Per an 1881 resolution, how should you pronounce the name of Arkansas?"

58% knows the answer to this question: "Whose quote is this: "If you are going through hell, keep going"? "

And do you know the answer to this one? "What South American country took its name from the Incan word for "cold winter"?"

72% knows the answer to this question: "Which is the capital city of Lebanon? "

And do you know the answer to this one? "The Statue of Zeus can be found in which country?"

50% knows the answer to this question: "The Acropolis is found in which country? "

And do you know the answer to this one? "Which of the following countries is closest to Australia?"