In 1953 Jonas Salk developed a vaccine for what viral infectious disease of the nervous system that was greatly feared in the first half of the 20th century?
What Mexican artist and feminist icon painted Self-Portrait with Cropped Hair shortly after divorcing her unfaithful husband, the artist Diego Rivera?
A substance with pH 4 is how many times more acidic than a substance with pH 5?
Though it has almost no native mammals, what island nation is home to an unusually large number of flightless birds including the kiwi, its national bird?
In square units, what is the area of a trapezoid with a height of 3 units and bases of 4 units and 2 units?
In physics, what is by far the weakest of the four fundamental forces?
The first battles of the American Revolution—Lexington and Concord—took place on April 19th of what year?
In February 2017, after only 24 days in office, who resigned as national security adviser amid a growing scandal over his contacts with Russian officials?
What country will host the 2018 Winter Olympic Games?
Named for the Flemish cartographer who developed it, what type of map projection keeps true compass positions intact but distorts geographic areas?
Who has won three NBA championships, four NBA Most Valuable Player Awards, and is the Cleveland Cavaliers’ all-time leading scorer?
The Simpsons is the longest-running scripted U.S. primetime television series in history. It’s set in what fictional city?
In 1991 who became the first democratically elected president of Russia?
In the 1440s, what German blacksmith invented a method of printing from movable type that remained largely unchanged until the 20th century?
During World War II, what American general was the supreme commander of Allied forces on D-Day?
What physicist established the nuclear theory of the atom when he shot a beam of alpha particles at a sheet of gold foil?
The Savoy Theatre in London was built in 1881 as a showcase for what songwriting team famous for comic operas such as The Mikado and The Pirates of Penzance?
“O beware, my lord, of jealousy; It is the green-eyed monster.” This famous quote is from what Shakespeare play?
What leading artist and intellectual of the Italian Renaissance painted The Last Supper and the Mona Lisa?
In hockey or soccer, a hat trick occurs when a player scores how many goals in a single game?