Today’s Tough trivia question is the first under the new categorical rotation as a Science question: Temperature scales are all designed to do the same thing: tell us if we need to put on a sweater or head for the beach. And they all have two fixed points, based on that most necessary of terrestrial substances. So, what are the freezing and boiling points of water in degrees Fahrenheit, Celsius, Kelvin, and Rankine? Bonus points if you know the average human body temperature on those scales.

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Yesterday’s question was: Stars of comic books, television, and movies, the Teenage Mutant Ninja Turtles are actually named after four classic artists. Name the artists… in order of their birth (the artists, not the turtles).

The answer is:

Donatello was born Donato di Niccolo di Betto Bardi around the year 1386 and died December 13, 1466, in Florence.

Leonardo da Vinci was born Leonardo di ser Piero da Vinci on April 15, 1452, in Vinci, Italy. He died on May 2, 1519, in Amboise, France.

Michelangelo di Lodovico Buonarroti Simoni was born March 6, 1475, in Tuscany, Italy, and die February 18, 1564, in Rome.

Raphael was born Raffaello Sanzio da Urbino on either March 28 or April 6, 1483 in Urbino, Italy. He died on April 6, 1520, in Rome.

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Ian’s Tough Trivia is a daily feature of this blog (Monday’s category is History; Tuesday is Arts; Wednesday is Science; Thursday is Entertainment; and Friday is Grab Bag). Each day, I post a tough question, as well as the answer to the previous day’s question. Simply comment on this post with your answer. I’ll approve the comments after the next question is posted. Sure, you can probably find the answers by searching the web, but what’s the fun in that?

And if you’ve got a favorite trivia question—or even just a topic for which you’d like to see a question—let me know! Reader participation is warmly encouraged.