We asked 100 scientists about unsolved problems in their fields. They sent back provocations — on the origins of life, the ...

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See if you can still remember the science basics you learned in elementary school.

What are some questions science can never answer? originally appeared on Quora - the place to gain and share knowledge, empowering people to learn from others and better understand the world. Answer ...

NPR's Ayesha Rascoe speaks with author Randall Munroe about his new book, "What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions." So question for you. If you unleashed a ...

1. Question: At what temperature are Celsius and Fahrenheit equal? Answer: -40 degrees. 103. Question: How many planets can be seen from Earth without a telescope? Answer: Five (Mercury, Venus, Mars, ...