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How many sheets of paper can be produced from a single tree?
science.howstuffworks.com/environmental/green-science/question16.htm
We know that paper comes from trees, but just how much does it take? Let's do the math and figure out how much paper your average tree can be made into.
How do they create the special effects in movies like The Matrix where the camera rotates around a frozen actor?
entertainment.howstuffworks.com/question295.htm
In movies like "The Matrix" and "Lost in Space," and in some TV commercials, there is an effect where the action freezes and the camera "walks around" the frozen scene. How do they do that?
If the temperature is 30 degrees F, why do we sometimes get snow and other times get freezing rain?
science.howstuffworks.com/nature/climate-weather/atmospheric/question302.htm
Precipitation can vary from rain to snow when the temperature is below freezing. Learn about precipitation.
What exactly is a blueprint?
science.howstuffworks.com/engineering/architecture/question321.htm
If you've ever seen a construction site, you may have noticed that the general plans for construction are drawn out in the form of blueprints. What exactly are blueprints, though, and how are they made? Find out in this article.
How Are People Able to Breathe Inside a Submarine?
science.howstuffworks.com/transport/question83.htm
How are people able to breathe inside a submarine? What do they do to keep the air breathable?
1949 Harley-Davidson FL Hydra-Glide
auto.howstuffworks.com/1949-harley-davidson-fl-hydra-glide.htm
The 1949 Harley-Davidson FL Hydra-Glide motorcycle featured a modern telescopic design. Learn more about the 1949 Harley-Davidson FL Hydra-Glide.
1973 Pontiac Firebird Formula
auto.howstuffworks.com/1973-pontiac-firebird-formula.htm
A bold new eggcrate grille decorated the front end of the base Firebird, Esprit, and the 1973 Pontiac Firebird Formula; but something far bolder could be tucked beneath the Formula's hood. Learn more about the details surrounding the 1973 Pontiac Firebird Formula.
How Combination Locks Work
home.howstuffworks.com/home-improvement/home-diy/combination-lock.htm
Combination locks use wheel packs to set the combination inside the lock. Learn about combination locks and see pictures of the inside of a combination lock.
How to Fix Cracked Plaster in 4 Steps
home.howstuffworks.com/home-improvement/home-diy/projects/how-to-fix-cracked-plaster.htm
Older homes often have lath-and-plaster walls. Latex paint will hide hairline cracks in plaster, but only temporarily. Larger cracks actually are easier to fix. Learn how to repair cracked plaster.
How to Hang an Interior Door in 4 Steps
home.howstuffworks.com/home-improvement/repair/how-to-hang-an-interior-door.htm
Hanging or installing an interior door isn't terribly difficult. You probably can tackle this home improvement project in an hour or two with the necessary materials and tools. Learn more.