66% knows the answer to this question: "What "equine" species of mussel jumped from the Caspian Sea and spread through the Great Lakes as an invasive species in the 1980s? "

And do you know the answer to this one? "What two countries share the worlds longest undefended land border?"

53% knows the answer to this question: "Where would you find the smallest bone in the human body? "

And do you know the answer to this one? "Sweet, black-eyed and snow are types of what vegetable?"

94% knows the answer to this question: "Which young girl helped drive the English from French soil in the 15th century? "

And do you know the answer to this one? "In which year did Japan attack Pearl Harbor?"

71% knows the answer to this question: "Why did King Edward VII give up the British throne in 1936? "

And do you know the answer to this one? "Which part of Italy witnessed 'The Great Mafia War' of 1981-1983?"

35% knows the answer to this question: "How much change do you get from $20 if you buy a $12.50 toy? "

And do you know the answer to this one? "To what prominent position in the United Kingdom did Margaret Thatcher rise in 1979?"

64% knows the answer to this question: "Shanghai stir-fried noodles is included in which cuisine? "

And do you know the answer to this one? "The U.S. has states what does Canada have?"

43% knows the answer to this question: "What keeps a duck dry even though it spends almost all its time in the water? "

And do you know the answer to this one? "In what city was John F. Kennedy assassinated?"

57% knows the answer to this question: "During which dynasty was Beijing's Forbidden City -- and a lot of great vases -- built? "

And do you know the answer to this one? "What was the name of the Soviet satellite launched on October 4, 1957? "

82% knows the answer to this question: "Which scientific project was responsible for the development of nuclear weapons? "

And do you know the answer to this one? "Henry VIII had Anne Boleyn executed on what grounds?"

77% knows the answer to this question: "Which of these is the name of a '60s song by Bob Dylan? "

And do you know the answer to this one? "What year was the original miniskirt designed by Mary Quant?"

74% knows the answer to this question: "What was another name for the Bubonic Plague? "

And do you know the answer to this one? "How many degrees are in a circle?"

86% knows the answer to this question: "Who sang the famous song "Struttin' With Some Barbecue" in 1928? "

And do you know the answer to this one? "Who sang the famous song "Lost Your Head Blues" in 1926? "