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10 Ways Animals Supposedly Predict the Weather
Next time the cat starts sneezing, should you look for your umbrella or check her out for allergies? There are many superstitions out there about animals and weather prediction. Which ones hold water, and which ones are for the birds?
How Thermoses (Vacuum Flasks) Work
home.howstuffworks.com/thermos.htm
How can the same device keep hot things hot and cold things cold? Find out what goes on inside a Thermos!
How Two-stroke Engines Work
science.howstuffworks.com/transport/engines-equipment/two-stroke.htm
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and how it compares to a four-stroke.
How Refractive Vision Problems Work
health.howstuffworks.com/human-body/systems/eye/vision-refractive.htm
Millions of people have refractive vision problems -- when the eyes get blurry or can't focus on an object. Learn about four major types of refractive vision problems.
How ATMs Work
money.howstuffworks.com/personal-finance/banking/atm.htm
''You can stop at an ATM, enter a PIN and leave with cash. Learn about the machines that give you money and the network that approves the transactions!''
How Autofocus Cameras Work
electronics.howstuffworks.com/autofocus.htm
Ever wonder how your camera knows what you're looking at? Understand how autofocus cameras lock on to the object you're photographing!
How Diesel Engines Work
auto.howstuffworks.com/diesel.htm
Diesel engines are often more efficient and less expensive to operate than their gasoline alternatives. So why aren't there more diesels on the roads? Well, they have their own issues, too.
How Underground Pet Fences Work
science.howstuffworks.com/innovation/everyday-innovations/pet-fence.htm
Want to keep your dog out of the neighbor's yard but feeling guilty pulling out a leash? You might consider an underground or wireless pet fence. Learn how these fascinating systems work and why this specialized fencing industry is booming.
How Microcontrollers Work
electronics.howstuffworks.com/microcontroller.htm
Most modern electronic devices (TVs, VCRs, microwaves and so on) contain an embedded microcontroller. It's basically a dedicated computer. Find out how these devices work and experiment with one on your own.
How Electric Motors Work
electronics.howstuffworks.com/motor.htm
Electric motors power almost everything in your kitchen, bathroom and office. But how do they perform their magic?