51% knows the answer to this question: "What object's gnomon ceases to work at night? "

And do you know the answer to this one? "How many is a third of two dozen?"

79% knows the answer to this question: "As Jan and Dean might know, the real "dead man's curve" is a tight corner of Sunset Boulevard in what city? "

And do you know the answer to this one? "Released in 2002 by iRobot, the Roomba was a round, flat robot. What did it do?"

60% knows the answer to this question: "Humans are killed when they fall six stories. What "nine-lived" animal is better able to survive 32-storey falls than 8-storey ones? "

And do you know the answer to this one? "Myron Scholes shared a Nobel Prize in 1997, even though his ideas were blamed for what 2008 calamity?"

39% knows the answer to this question: "Whom did the Wizard of Oz call a "clinking, clanking, clattering collection of colligenous junk"? "

And do you know the answer to this one? "What telephone inventor never called his mom, seeing as how she was deaf and all?"

89% knows the answer to this question: "Richard Henry Sellers went by what name, because his parents kept accidentally calling him by the name of his stillborn older brother? "

And do you know the answer to this one? "If you wanted to get to London fast, you could have taken the Concorde, which took you from JFK in New York to what London airport?"

93% knows the answer to this question: "Bunnies are saltatorial. Kangaroos are ricochetal. What does this mean they do? "

And do you know the answer to this one? "When you "get the wind knocked out of you," what part of your body has a spasm?"

85% knows the answer to this question: "What are the small spots called occasionally seen in your field of vision? "

And do you know the answer to this one? "In 1848, German missionaries Johannes Rebmann and Johann Ludwig Krapf reported a snow-capped mountain 3 degrees south of the equator. For the next decade, the idea was ridiculed, but they were right. What mountain is this?"

64% knows the answer to this question: "In the Peter Benchley novel (and Steven Spielberg movie) what kind of shark was Jaws? "

And do you know the answer to this one? "Also known as the Swiss mountain cat, what feline is named for the cigars its coat resembles?"

86% knows the answer to this question: "Which of these animals would have an outer covering of feathers? "

And do you know the answer to this one? "If my doctor gives me a reading of 120 over 80, the results are good. The results of what?"

69% knows the answer to this question: "What country's coat of arms depicts a kangaroo and an emu? "

And do you know the answer to this one? "What cinematic city has a famous beachside promenade called the Croisette?"

52% knows the answer to this question: "What do the initials "CME" stand for in medical terms? "

And do you know the answer to this one? "In 1859, James Clerk Maxwell proved that the rings of what planet could not be solid, since they would then break apart?"

76% knows the answer to this question: "Who is the only woman to be prime minister of Great Britain? "

And do you know the answer to this one? "Ivan Schwab explained why what bird can slam its head against a tree 10,000 times a day, at 1200 Gs each time, without so much as a headache, let alone retinal detachment, spinal cord injury or brain damage?"