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How X-rays Work
science.howstuffworks.com/x-ray.htm
X-ray machines seem to do the impossible: They see straight through clothing, flesh and even metal, thanks to some very cool scientific principles at work. Find out how X-ray machines see straight to your bones.
What Does a Humidifier Do? How Humidifiers Work
home.howstuffworks.com/humidifier.htm
Is the air feeling a little too dry in your home? A humidifier can help make things more comfortable -- and even save a little wear and tear on your house. But what does a humidifier do, exactly?
House Painting Tools
home.howstuffworks.com/home-improvement/home-diy/painting/house-painting-tools.htm
Different painting tools are right for different projects. Learn to choose among house painting tools, and create a lasting paint job.
Do cows pollute as much as cars?
animals.howstuffworks.com/mammals/methane-cow.htm
Cow flatulence produces the greenhouse gas methane, which is linked to global warming. Find out how scientists are working to reduce cow flatulence in livestock.
How Online Training Works
people.howstuffworks.com/how-online-training-works.htm
Driver safety, employee training and college courses are now being offered in a virtual environment. Learn how these virtual classrooms work.
Are ice blocks better than air conditioning?
home.howstuffworks.com/green-living/ice-block-ac.htm
Air conditioning with ice blocks is taking root among some of the world's most powerful companies. Learn how air conditioning with ice blocks works.
How Thought-Controlled Wheelchairs Work
computer.howstuffworks.com/audeo.htm
Thought-controlled wheelchairs intercept signals from the brain using an ambient audeo system. Read more about how thought-controlled wheelchairs work.
1916-1923 Packard Twin Six
auto.howstuffworks.com/1916-1923-packard-twin-six.htm
The 1916-1923 Packard Twin Six set the standard of American luxury cars of the day. Explore the 1916-1923 Packard Twin Six at HowStuffWorks.
Furnace Maintenance
home.howstuffworks.com/home-improvement/heating-and-cooling/furnace-maintenance.htm
Furnaces are usually trouble-free and easy to maintain. Efficient operation is a function of good maintenance. Learn how to maintain a furnace.
10 Cheap Home Decorating Ideas
home.howstuffworks.com/home-decor/decorating-styles-techniques/10-cheap-home-decorating-ideas.htm
It's natural to feel the need to spruce up your home every once in a while. Check out these 10 cheap home decorating ideas to stay on budget.