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Your search for "first civilization" returned 1,313 results
What are the odds there is life in outer space?
science.howstuffworks.com/space/aliens-ufos/extraterrestrial-life-odds.htm
Are we alone? Jodie Foster's character in "Contact" didn't think so, and neither do the scientists who've been listening for an extraterrestrial message for decades.
How Tunnels Work
science.howstuffworks.com/engineering/structural/tunnel.htm
Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.
Why is habeas corpus important?
people.howstuffworks.com/habeas-corpus-important.htm
Habeas corpus means "you have the body" and is an important civil right, even if it sounds archaic. Learn how habeas corpus works.
Is Africa the cradle of humanity?
science.howstuffworks.com/life/evolution/africa-cradle-humanity.htm
Is the cradle of humanity in Africa? Learn about the cradle of humanity in this article from HowStuffWorks.
10 Women Who Broke New Ground in Engineering
science.howstuffworks.com/engineering/structural/10-women-in-engineering.htm
One of the most travelled stretches of U.S. highway was designed by a woman who loved mathematics and wasn't interested in being a teacher. Who was she, and where is it?
Why do we need warriors?
people.howstuffworks.com/need-warriors.htm
Warriors have evolved over the years as new technologies have been developed. Learn about warriors in this article.
How Currency Works
money.howstuffworks.com/currency.htm
Currency is a complex aspect of human civilization. Find out all about these symbols of financial value.
How the March on Washington Worked
history.howstuffworks.com/historical-events/march-on-washington.htm
The 1963 March on Washington for Jobs and Freedom ensured the passage of the Civil Rights Act. But its success was not assured at the beginning.
Harpers Ferry Has a Complex and Dizzying History
history.howstuffworks.com/american-civil-war/harpers-ferry.htm
Harpers Ferry is known as the spot where John Brown launched his disastrous slave rebellion. But why was it also a transportation and ammunitions powerhouse?
What's the Difference Between Twilight and Dusk?
science.howstuffworks.com/nature/climate-weather/atmospheric/twilight-dusk.htm
Dusk is a beautiful time of day. So is twilight. But when does one turn into the other? And did you know there were three versions of each?