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Are You Smarter Than a 5th Grader: Science Edition!
play.howstuffworks.com/quiz/are-you-smarter-a-5th-grader-science-edition
Do you think you're smarter than a 5th grader when it comes to science? Can you answer these elementary science questions? Let's find out with this quiz!
What If the Earth Had Two Moons?
science.howstuffworks.com/science-vs-myth/what-if/what-if-earth-had-two-moons.htm
Tons of planets have more than one moon. Heck, Jupiter and Saturn have more than 50 each, and they seem to be doing just fine. So why is it that the idea of a second moon for Earth has scientists throwing up red flags?
The Girl of Steel: Supergirl Quiz
play.howstuffworks.com/quiz/supergirl-quiz
'Supergirl' made it's debut 4 years ago, so in celebration, find out how well you know the popular CW superhero series! Take our latest quiz to see how much you know about the last daughter of Krypton. Good luck!
New 'Doctor Who' Quiz
play.howstuffworks.com/quiz/new-doctor-who-quiz
The much-loved British science fiction TV show has garnered a cultlike following and can be seen around the world. Channel your inner Time Lord, and master this quiz.
5 Things You Didn't Know About the Spring Equinox
science.howstuffworks.com/environmental/earth/5-things-didnt-know-about-spring-equinox.htm
The spring, or vernal, equinox traditionally marks the first day of spring - but climate scientists use a different date altogether. Find out more about this and other facts about the spring equinox.
Hunting for Martians in the Most Extreme Desert on Earth
science.howstuffworks.com/hunting-for-martians-in-most-extreme-desert-on-earth.htm
Life-hunting rovers are going to Mars in 2020. HowStuffWorks tracks their adventures on Earth and wonders what the Martian life will be named, if found.
How Photosynthesis Captures Light and Powers Life on Earth
science.howstuffworks.com/life/cellular-microscopic/photosynthesis.htm
No life, except possibly very small bacteria, would exist on Earth without photosynthesis.
A Season for Change: The Equinox and Solstice Quiz
science.howstuffworks.com/environmental/earth/geophysics/equinox-solstice-quiz.htm
Take this HowStuffWorks quiz to find out what you know about the summer and winter solstices and the spring and fall equinoxes.
How much do you know about summer solstice?
play.howstuffworks.com/quiz/how-much-do-you-know-summer-solstice
From its pagan and its religious roots to the mystery of Stonehenge and other ancient sites, the summer solstice has meant many things to many people on this planet. See how much you know about when and why the summer solstice happens, and why it's been considered a magical time of the year.
What would nuclear winter be like?
science.howstuffworks.com/nuclear-winter.htm
If the sight of a mushroom cloud burning above the horizon suggests that the nuclear weapon-equipped world might end with a bang, then nuclear winter presents the notion that post-World War III humanity might very well die with a whimper.