Think you’re a science genius? Put your knowledge to the ultimate test with 50 challenging science trivia questions covering ...

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

Test your science knowledge with this weekly news quiz! We’d love to hear from you! E-mail us at games@sciam.com to share your experience.

Test your science knowledge with this weekly news quiz! We’d love to hear from you! E-mail us at games@sciam.com to share your experience.

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

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, ...