87% knows the answer to this question: "NASA released which famous photo of Mars in 1976? "

And do you know the answer to this one? "What term is used on the website Twitter to indicate a post?"

32% knows the answer to this question: "Which of these countries has the hottest average temperature? "

And do you know the answer to this one? "What do the letters "ATM" stand for?"

95% knows the answer to this question: "Louis Braille was credited with what 1929 invention/discovery? "

And do you know the answer to this one? "Vatican City, where the Pope resides, is a city-state entirely contained within what country?"

31% knows the answer to this question: "In which century did Charles Darwin die? "

And do you know the answer to this one? "Queen Mary of England was hated by her sister Elizabeth for propagating which religion?"

33% knows the answer to this question: "In which country was Osama bin Laden caught by US forces in 2011? "

And do you know the answer to this one? "What was the name of the mutual defense treaty that eight communist states in Eastern Europe established on May 14, 1955?"

35% knows the answer to this question: "What does "LOL" stand for in internet text slang? "

And do you know the answer to this one? "Flat lands with only small changes in elevation are known as what?"

72% knows the answer to this question: "What is the common name of the orca? "

And do you know the answer to this one? "What type of boat did Harry Belafonte sing about in a song also called Day-O?"

30% knows the answer to this question: "An 1866 Edouard Manet painting is of a woman and what brightly-colored bird? "

And do you know the answer to this one? "The Mitsui Miike coal mine explosion that killed 83 people, took place in which country?"

78% knows the answer to this question: "Who sang the famous song "House Of The Risin' Sun" (1962)? "

And do you know the answer to this one? "Who sang the famous song "Meeting Across The River" (1975)"

85% knows the answer to this question: "What party did Winston Churchill represent as a Prime Minister? "

And do you know the answer to this one? "What inventor created the first assembly line?"

48% knows the answer to this question: "The tribe of Genghis Khan were known by what name? "

And do you know the answer to this one? "How many times does 3 go into 150?"

93% knows the answer to this question: "The leaf from which plant is on the Canadian flag? "

And do you know the answer to this one? "The 1950s philosopher and writer Simone de Beauvoir was from which country?"