68% knows the answer to this question: "What year was the link between cancer and tobacco tar first discovered? "

And do you know the answer to this one? "Thomas Jefferson was instrumental in the composition of which historic document?"

31% knows the answer to this question: "Which is the complete name of former US Secretary of State Kissinger? "

And do you know the answer to this one? "In what Asian city is Tiananmen Square, which became known in 1989 as a protest site, located?"

43% knows the answer to this question: "What is the largest city in Louisiana? "

And do you know the answer to this one? "What is another name for a farrier?"

62% knows the answer to this question: "Which North American country is the coldest, on average? "

And do you know the answer to this one? "Which of these states is a peninsula?"

77% knows the answer to this question: "What is Japan? "

And do you know the answer to this one? "Where is the Mississippi River?"

57% knows the answer to this question: "What kind of storm might produce a "whiteout"? "

And do you know the answer to this one? "Who sang the famous song "Call Me" (1980)?"

40% knows the answer to this question: "Who famously defeated Bobby Riggs in a televised tennis match in Texas in 1973? "

And do you know the answer to this one? "During what War did the 1847 'Battle of Rio San Gabriel' take place?"

55% knows the answer to this question: "Who sang the famous song "Hello" (1984) ? "

And do you know the answer to this one? "Who sang the famous song "Faith" (1987) ?"

63% knows the answer to this question: "Life-size terracotta warriors of the Qin Dynasty were discovered in what country? "

And do you know the answer to this one? "What is science dealing with the circulation of goods and services?"

45% knows the answer to this question: "Who sang the famous song "Eight Days A Week" (1964)? "

And do you know the answer to this one? "Who sang the famous song "Wouldn't It Be Nice" (1966)?"

55% knows the answer to this question: "In ancient times, the Roman Colosseum was used for what types of events? "

And do you know the answer to this one? "If you were eating paella, you'd be in which European country?"

67% knows the answer to this question: "Where is the smallest bone in the body? "

And do you know the answer to this one? "Which is the most acidic part of the digestive system?"