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A Season for Change: The Equinox and Solstice Quiz

science.howstuffworks.com/environmental/earth/geophysics/equinox-solstice-quiz.htm

Take this HowStuffWorks quiz to find out what you know about the summer and winter solstices and the spring and fall equinoxes.

How Aerosol Cans Work

science.howstuffworks.com/innovation/everyday-innovations/aerosol-can.htm

They dispense everything from hairspray to cleaning products to whipped cream. Without them, you'd be doing a whole lot of pumping.

How to Change a Tire

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Changing a tire can be tricky. Learn how to change a tire at HowStuffWorks.

How does your body digest a cigarette?

health.howstuffworks.com/wellness/smoking-cessation/digest-a-cigarette.htm

Can you body really digest a cigarette? Not really -- those chemicals just aren't useful for its functions. Find out how your body digests a cigarette.

How Paintball Works

entertainment.howstuffworks.com/paintball.htm

Paintball has developed into a worldwide phenomenon. Players hunt opponents, take aim, and splatter them with paint-filled "bullets" in guerilla-style, faux warfare. Find out all about paintball.

What is the importance of breathing in yoga?

health.howstuffworks.com/wellness/diet-fitness/yoga/what-is-the-importance-of-breathing-in-yoga-.htm

In yoga, breathing is as important as the proper posture. Learn about important breathing exercises and how they better your yoga practice.

What Is a Watt?

science.howstuffworks.com/environmental/energy/question501.htm

Amps, volts, watts, and ohms are the main units used for measuring electricity. Find out how amps, watts, volts, and ohms relate to electricity.

How Dust Storms Work

science.howstuffworks.com/nature/climate-weather/storms/dust-storm.htm

Though they're outranked by other, more dangerous natural phenomena, dust storms can still do serious damage to life and property. What causes these massive storms?

How Helicopters Work

science.howstuffworks.com/transport/flight/modern/helicopter.htm

Believe it or not, the marvel we know as the helicopter began as a Chinese top consisting of a shaft - a stick - adorned with feathers on one end.

Winter Skin Care Tips

health.howstuffworks.com/skin-care/daily/regimen/winter-skin-care.htm

Winter skin care can be very difficult in cold climates.

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