63% knows the answer to this question: "Which space program went to the moon? "

And do you know the answer to this one? "Which stimulant do chocolate and coffee have in common?"

51% knows the answer to this question: "Which European city was home to the Roman General Julius Caesar? "

And do you know the answer to this one? "What civilization built the great city of Machu Pichu in Peru?"

30% knows the answer to this question: "Which opera term means "medium male voice that lies between the low bass and the higher tenor"? "

And do you know the answer to this one? "In what country are Guadalajara, Cancun and Tijuana popular tourist destinations?"

33% knows the answer to this question: "In what song did she "cut off their tales with a carving knife"? "

And do you know the answer to this one? "What is the process by which a person's eyes blend bits of pure color placed next to each other?"

46% knows the answer to this question: "Which of these was an 80s TV series? "

And do you know the answer to this one? "What does Rio de Janeiro literally mean?"

43% knows the answer to this question: "What island did the Americans attack in Operation Urgent Fury in the 1980s, ostensibly to protect 600 medical students? "

And do you know the answer to this one? "What country provided the Thirteen Colonies with 90% of its gunpowder during the American Revolution, and also kept the British ship busy on the European side of the Atlantic?"

54% knows the answer to this question: "Which method of storing food was invented in 1810? "

And do you know the answer to this one? "Who sang the national anthem at President Obama's signing in ceremony on Capitol Hill in 2013?"

75% knows the answer to this question: "Popeye to the contrary, an 1870 German study misplaced a decimal, and reported that what vegetable has 10 times the iron content it actually does? "

And do you know the answer to this one? "Where does Flamenco dancing come from?"

35% knows the answer to this question: "Which of these US states is the furthest south? "

And do you know the answer to this one? "Why do animals use camouflage?"

47% knows the answer to this question: "Who sang the song, "Say My Name"? "

And do you know the answer to this one? "Who sang the famous song "Superstition" (1973) ?"

78% knows the answer to this question: "Who sang the famous song ”You’ve Got a Friend” (1995)? "

And do you know the answer to this one? "Who sang the famous song Sie ist Weg (1995)? "

37% knows the answer to this question: "In which part of the body are the hamstring muscles? "

And do you know the answer to this one? "How fast does human hair grow?"