72% knows the answer to this question: "What do city trucks spread on roads to melt ice? "

And do you know the answer to this one? "What is the capital of Poland?"

66% knows the answer to this question: "What Khmer capital was reclaimed by the jungle sometime after the Thais conquered it in 1431? "

And do you know the answer to this one? "Throughout 2008, the UK was involved in a war with which of these mountainous countries?"

71% knows the answer to this question: "In what country was the famous artist Leonardo da Vinci born? "

And do you know the answer to this one? "What do farmers called chopped feed and grain, found in airtight silos?"

53% knows the answer to this question: "Which singer was drafted into the US Army in 1958? "

And do you know the answer to this one? "In the mid-1980s, Canadian zoo breeder Keith Connell created a yuppie fad for owning the Vietnamese potbellied variety of what animal?"

45% knows the answer to this question: "What is the capital city of Cuba? "

And do you know the answer to this one? "Which Central American country's highest elevation point is Cerro Chirripo at 3,810 meters?"

56% knows the answer to this question: "On the color wheel, how many colors make up a triad? "

And do you know the answer to this one? "What female artist's real name is Cherilyn Sarkisian LaPiere?"

30% knows the answer to this question: "Which military themed game involved guessing the position of boats? "

And do you know the answer to this one? "Saint Peters Basilica is in which country?"

64% knows the answer to this question: "A NASA deep space probe's ion propulsion was inspired by the otherwise awful episode Spock's Brain, of what TV series? "

And do you know the answer to this one? "Who first patented the telephone, although just barely?"

47% knows the answer to this question: "The Secret Service was powerless when what wildlife attacked Secretary of State Hillary Clinton as she left a Malawi airport in 2012? "

And do you know the answer to this one? "Who first vulcanized rubber?"

47% knows the answer to this question: "What country gets its name from the old Roman port of Portus Cale, now called Oporto? "

And do you know the answer to this one? "If you order your men to hold their fire until they saw the enemy's sclera, what are they waiting to see?"

78% knows the answer to this question: "Where is the infamous American base on Cuba where terrorists and terrorist suspects are held located? "

And do you know the answer to this one? "What country's flag is called the Union Jack?"

43% knows the answer to this question: "Which of these is smallest? "

And do you know the answer to this one? "The isle of Ireland is nicknamed for this variety of beryl. Like Ireland, this gem is associated with tranquillity. (Hmmm ... maybe not.) What is it?"