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5 of the World's Most Grueling Ultramarathons
entertainment.howstuffworks.com/ultramarathons.htm
Running through extreme heat, elevation, snow or rough terrain in an ultramarathon is a challenge designed to defeat all but the most determined.
How Wetlands Work
science.howstuffworks.com/environmental/green-science/wetland.htm
Wetlands act like sponges, soaking up extra water during floods. They filter water as it runs to our rivers and streams. Find out what else wetlands do.
10 Deadly Agents the CDC Works With
health.howstuffworks.com/diseases-conditions/infectious/10-deadly-agents-the-cdc-works-with.htm
The CDC routinely handles deadly agents that can cause disease and infection. View 10 of these public health enemies to learn more.
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 No-fly Zones Work
science.howstuffworks.com/no-fly-zone.htm
No-fly zones are employed by NATO and the United Nations to protect civilian populations. Learn about the enforcement and effectiveness of no-fly zones.
How Paying Off Student Loans Works
money.howstuffworks.com/personal-finance/college-planning/financial-aid/paying-off-student-loans.htm
Paying off student loans is explained in this article from HowStuffWorks. Learn about some of the different methods of paying off student loans.
How Artificial Geothermal Energy Works
Artificial geothermal energy is made by adding water to naturally hot rocks. Learn about artificial geothermal energy.
The Construction Safety Quiz
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Construction workers face some of the highest fatal injury risks of any profession. Think you know how to keep yourself and your employees safe? Take this quiz to find out!
How Sump Pumps Work
home.howstuffworks.com/sump-pump.htm
Sump pumps help keep your basement or crawlspace dry. Learn how to find out whether you need a sump pump and how to choose and maintain one.
How Patents Work
money.howstuffworks.com/patent.htm
Patents protect inventions and intellectual property from being copied. Learn about the uses of patents, the history of patents and about intellectual property law.