Search Results | human population
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Can twins sense each other?
science.howstuffworks.com/life/genetic/can-twins-sense-each-other.htm
We love stories of twins who can sense each other's pain or know what the other is thinking. But is there really such a thing as "twinspiration" or is just coincidence?
Do You Know Which Phylum These Animals Belong To?
play.howstuffworks.com/quiz/do-you-know-which-phylum-these-animals-belong-to
Get ready to put your knowledge of biology to the ultimate test! Try to match all of these animals to their correct phylum with this science quiz!
Old Railroads
history.howstuffworks.com/american-history/old-railroads.htm
The age of old railroads saw the birth of the first railroad lines and mass transportation on rail. Read more about old railroads in America.
10 Science Questions You Should Really Know How to Answer
science.howstuffworks.com/innovation/science-questions/10-science-questions-you-should-know.htm
Why is the sky blue? What's relativity all about? If you're thinking, "something to do with light and physics and stuff," we have some short explanations for you.
How Volunteer Armies Works
money.howstuffworks.com/economics/volunteer/information/volunteer-armies.htm
Volunteer armies face a number of recruitment challenges. Learn how volunteer armies operate and how they differ from conscripted armies.
How Communism Works
people.howstuffworks.com/communism.htm
Communism is a type of government that relies on collectivization of labor and good to equal out the classes. Learn about the workings of communism.
5 Green Methods to Survive the Apocalypse
science.howstuffworks.com/environmental/green-science/5-green-methods-to-survive-apocalypse.htm
The green movement isn't going to die just because the world ends. In fact, sustainable types might even have a leg up post-apocalypse. Here's how.
How Desert Animals Thrive in the Hottest Regions of the World
animals.howstuffworks.com/animal-facts/desert-animals.htm
Discover the fascinating world of desert animals. Explore their survival strategies and adaptations in harsh arid environments.
Top 10 Space Conspiracy Theories
science.howstuffworks.com/space-conspiracy-theory.htm
Space conspiracy theories feature hoaxes, government cover-ups and intelligent aliens. Check out our list of the top 10 space conspiracy theories.
10 Real Animals That Seem Make-believe
animals.howstuffworks.com/animal-facts/10-animals-seem-make-believe.htm
The world boasts an incredible diversity of animals, some of which are so colorful and bizarre they seem made-up. Meet 10 of them at HowStuffWorks.