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Serpent Mound, Ohio: Inside the Archaeological Mystery
science.howstuffworks.com/environmental/earth/archaeology/ohio-serpent-mound.htm
The curves of the Serpent Mound, Ohio state's massive and mysterious geological wonder, line up with the sun during equinoxes and solstices.
Can You Identify These Landmarks That Were Made During the 1950s?
play.howstuffworks.com/quiz/can-you-identify-these-landmarks-that-were-made-during-the-1950s
The 1950s were a time of global transition, as much of Europe worked to rebuild after WWII while the U.S. took advantage of unprecedented economic prosperity. Take our quiz to see if you can name the most famous landmarks of this decade!
12 Most Dangerous Cities in Mexico by Homicides per Capita
people.howstuffworks.com/most-dangerous-cities-in-mexico.htm
The nation of Mexico is home 130 million people across 31 states (Mexico City is a separate entity but not a state in itself, similar to Washington, D.C. in the United States). Unfortunately due to a variety of factors, Mexican cities are often host to a violent crimes including homicide. Here, we'll detail the most dangerous cities in Mexico and give some info about their history.
If We Give You a Capital, Can You Give Us the Right State?
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These are the cities where state governments reside, laws are passed, and the future of a state gets determined. Sure, some of them might sound familiar, but do you know in which state each of these capitals can be found?
A Border Runs Through It: Name These Spots That Straddle Two Places
history.howstuffworks.com/world-history/two-places-same-time.htm
How many of these boundary-pushing (literally!) borders can you name?
How the Euro Works
money.howstuffworks.com/euro.htm
As of January 1, 2002, the euro is the official monetary unit of 12 nations. Find out all about the euro, who's using it and the widespread effects of having a single European currency.
Fallout: What Would Happen if the Hoover Dam Broke?
science.howstuffworks.com/engineering/structural/hoover-dam-broke.htm
The Hoover Dam holds back 10 trillion gallons of water. That's enough to cover the entire state of Connecticut. How much damage would be done if the dam broke?
William Walker: The American Mercenary Who Named Himself President of Nicaragua
history.howstuffworks.com/historical-figures/william-walker.htm
Before being executed in 1860 for his misadventures, William Walker, known as a 'filibuster,' raised a private army and briefly installed himself as the president of Nicaragua.
How the Sierra Club Works
science.howstuffworks.com/environmental/conservation/issues/sierra-club.htm
The Sierra Club protects the environment by lobbying for environmental preservation. Learn more about the Sierra Club conservation efforts.
How Acid Rain Works
science.howstuffworks.com/nature/climate-weather/atmospheric/acid-rain.htm
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides from power plants, cars and factories. Find out how acid rain is produced.