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How do you build an underwater tunnel?
science.howstuffworks.com/engineering/structural/build-underwater-tunnel.htm
Underwater tunnels are so commonplace that we rarely think of the great dangers -- and extreme construction techniques -- these modern wonders require. With the opening of the Marmaray Tunnel in October 2013, it's time to take a second look.
10 Reasons College Costs So Much
People often complain about the high price of college today. Here are 10 reasons why college costs so much from HowStuffWorks.
How Biodegradation Additives Work
science.howstuffworks.com/environmental/green-science/biodegradation-additives.htm
Plastic's handy, hardy stuff, but we don't want to leave piles of old forks and water bottles for future generations to trip over. Can special additives that break down plastics faster save the day?
Top 10 Green Heating and Cooling Technologies
Compared to standard heating and air systems, going green is better for the environment -- and your wallet because they use less energy. So what kind of green HVAC systems are on the market today? Read on to find out.
10 Obscene Hand Signs and Gestures From Around the World
people.howstuffworks.com/10-obscene-hand-gestures-from-around-world.htm
A friendly gesture in one country might be highly insulting in another. You'd better be sure you're using these 10 hand signs correctly before trying them out.
If You Recognize More Than 35 Of These Iconic Celebs, You're Probably A Baby Boomer
From Hollywood hunks like Marlon Brando or Paul Newman to singing sensations and sports heroes, baby boomers grew up admiring a whole different series of celebrities than their parents, and sorry millennials ... there's not a Kardashian in sight. See which ones you recognize with this quiz!
Do Countries With Stricter Gun Laws Really Have Fewer Homicides?
people.howstuffworks.com/strict-gun-laws-less-crime.htm
Ask a card-carrying member of the NRA and you'll get one answer. Ask a member of Everytown for Gun Safety and you'll get another. We look at the research that underlies this controversial topic.
How Landfills Work
science.howstuffworks.com/environmental/green-science/landfill.htm
What happens to all of that trash you put on the curb every week? It doesn't just disappear into a parallel universe. Much of it probably goes to the local landfill, and how it gets handled there is a very involved system.
How Population Works
people.howstuffworks.com/population.htm
Population is one of the most important aspects of human civilization. Learn about population and find out how a population is counted.
How Olympic Timing Works
entertainment.howstuffworks.com/olympic-timing.htm
In timed Olympic events, the difference between the gold and the silver can come down to a fraction of a second. You won't find that kind of accuracy in your typical wristwatch. Find out about the systems (and backup systems) that keep Olympic timing honest.