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How Hydraulic Machines Work
science.howstuffworks.com/transport/engines-equipment/hydraulic.htm
Hydraulic machines do most of the heavy hauling and lifting on most construction projects. Learn about hydraulic machines and types of hydraulic machines.
How Hydropower Plants Work
science.howstuffworks.com/environmental/energy/hydropower-plant.htm
Hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power. Find out how hydropower plants work.
How Hypnosis Works
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/hypnosis.htm
The practice of hypnotism dates back centuries, and there are those who swear by its validity. Whether you're a skeptic or a believer, hypnosis is an interesting phenomenon. Check it out -- and let us know if you start to bark like a dog.
How IEDs Work
science.howstuffworks.com/ied.htm
IEDs (improvised explosive devices) are simple to make, easily hidden and very destructive. Read why IEDs are the weapon of choice for some fighters.
How Ice Cream Works
science.howstuffworks.com/innovation/edible-innovations/ice-cream.htm
Although it's fairly easy to make at home or pick up at your local grocery store, ice cream is actually a very complex substance. Learn what goes into ice cream, how it's made and who invented it.
How Ice Sculpting Works
science.howstuffworks.com/innovation/everyday-innovations/ice-sculpting.htm
Ice sculptures can range from small tabletop pieces to entire buildings. In this fundamentally temporary medium, art and engineering combine to form sparkling, breathtaking effects.
How Icebergs Work
science.howstuffworks.com/environmental/earth/geophysics/iceberg.htm
Icebergs are a lot more than just giant chunks of floating ice. Learn about icebergs and find out how icebergs can affect the ocean around them.
How Impossible Colors (Like Stygian Blue) Work
science.howstuffworks.com/impossible-colors.htm
What if there are colors within the visible spectrum that our brains can't perceive? In fact, there are. They're called impossible colors. But some researchers think they've discovered a way to see the impossible.
How Impression Evidence Works
science.howstuffworks.com/impression-evidence.htm
Impression evidence is an important and sometimes overlooked aspect of the criminal investigation process. Find out about impression evidence here.
How Instant Film Works
science.howstuffworks.com/innovation/everyday-innovations/instant-film.htm
Before digital cameras, you needed instant film to get instant pictures. With instant-film photography, you can watch the image slowly come together in a matter of minutes. While it seems like magic, the process relies on elements of science. Find ou