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Why are humans altruistic?
science.howstuffworks.com/life/inside-the-mind/emotions/humans-altruistic.htm
Why are humans altruistic? Even when it might hurt us? See concepts and ideas on why humans are altruistic at Discovery Health.
Where did the moon come from?
science.howstuffworks.com/question777.htm
The origin of the moon is explained in this article. Learn about the origin of the moon.
The Basic Astronomy quiz
play.howstuffworks.com/quiz/the-basic-astronomy-quiz
The night sky has fascinated humans throughout history. Even if you're not a science buff in general, we're willing to bet you know a thing or two about astronomy yourself. Find out just how much with our quiz!
Can You Ace This 12th Grade Physics Quiz?
play.howstuffworks.com/quiz/can-you-ace-this-12th-grade-physics-quiz
You're gonna have to get PHYSIC-al with this quiz. It's so easy, a high schooler can do it! Actually, some of them can't. Do you think you can get a better score than a 12th-grader?
Can You Identify These Celebrities If We Make Them Look Like Babies?
play.howstuffworks.com/quiz/can-you-identify-these-celebrities-if-we-make-them-look-like-babies
Have you ever wondered what your favorite celebrity looked like when they were a baby? Maybe you've tried to find baby photos with no success. Well, here's your chance. We baby-tized 40 celebrities, and you get to identify them. Can you do it?
Evolution by Natural Selection: Examples and Effects of Adaptation
science.howstuffworks.com/life/evolution/natural-selection.htm
Natural selection is the idea that organisms that are best suited to survive pass their traits down. Is it true that only the strong survive?
Can You Name These Famous Lefties?
play.howstuffworks.com/quiz/can-you-name-these-famous-lefties
About one in ten people 'round the world are left-handed, but the people within this group are in some pretty good company. See if you're smart enough to ace this quiz on the most celebrated southpaws from the past and today.
Can we manufacture matter?
science.howstuffworks.com/environmental/earth/geophysics/can-we-manufacture-matter.htm
We humans love to create. We build soaring skyscrapers from the ground up. We fill blank canvasses with timeless, magnificent art. Can we achieve the ultimate feat and generate matter?
How Horoscopes Work
entertainment.howstuffworks.com/horoscopes-astrology/horoscope.htm
Astrology holds that the relative positions of stars and planets have influence over the lives of human beings. Believers call it a science, while non-believers call it nonsense. Learn the basics of astrology.
How Kin Selection Works
science.howstuffworks.com/life/evolution/kin-selection.htm
We're used to taking the phrase "survival of the fittest" to mean it's an "every man for himself" world. But some animals (like worker bees) sacrifice themselves to ensure their species lives on. Why would they do this?