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Your search for "black holes" returned 151 results
How Kaleidoscopes Work
science.howstuffworks.com/kaleidoscope.htm
Kaleidoscopes have been fascinating people since the early 19th century. Whether you think of kaleidoscopes as toys or as works of art, no matter how often you look inside, you'll never see the same thing twice.
How Relief Wells Work
science.howstuffworks.com/environmental/green-science/relief-well.htm
Relief wells are used to prevent and stop dangerous oil flows. Learn about relief wells and how relief wells are drilled.
How Do Solar Panels Work?
science.howstuffworks.com/environmental/energy/solar-cell.htm
Solar cells use sunlight to produce electricity. But is the 'solar revolution' upon us? Learn all about solar cells, silicon solar cells and solar power.
How Offshore Drilling Works
science.howstuffworks.com/environmental/energy/offshore-drilling.htm
Offshore drilling means combing Earth for new underwater oil reserves. Learn more about offshore drilling and finding oil in the midst of rough seas.
How Solar Water Heaters Work
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Solar water heaters could help cut your utility bills. Visit HowStuffWorks to learn about solar water heaters.
10 Amazing Ancient Egyptian Inventions
science.howstuffworks.com/innovation/inventions/5-amazing-ancient-egyptian-inventions.htm
There may be no greater tribute to a society's ingenuity and vision than the Great Pyramid of Giza in Egypt. What other cool stuff did the ancient Egyptians invent?
How Caterpillar Backhoe Loaders Work
science.howstuffworks.com/transport/engines-equipment/backhoe-loader.htm
You see backhoe-loaders on nearly every construction site around town. Learn how these amazing machines work and what they are able to do.
How Atavisms Work
science.howstuffworks.com/life/evolution/atavism.htm
Atavisms are traits that are left over from a distant evolutionary ancestor. Learn more about atavisms and the controversy surrounding atavism.
10 Major Players in the Private Sector Space Race
science.howstuffworks.com/10-major-players-in-private-sector-space-race.htm
Sure, the shuttles may be sitting around in museums now, but our journey to space is far from over. Get ready to meet some serious contenders in the new space race.
Thought Experiment: What If We Stopped Walking Upright?
Humans have only been bipedal for a sliver of history. What if we returned our spines to their original position and quit walking upright? What would that world be like?