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How Freezers Work
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Many freezers have features to prevent frost and digitally monitor temperatures, but the technology has been evolving for years. Learn about freezers.
How the NASA Space Food Research Lab Works
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The NASA Space Food Research Lab develops all of the food used on NASA missions. Learn about the NASA Space Food Research Lab and space food.
10 Innovations in Winemaking
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People have been making (and drinking) wine for 8,000 years -- which means lots of innovations both now and in the past, from creating Champagne to quirky wine labels.
Evolution by Natural Selection: Examples and Effects of Adaptation
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Natural selection is the idea that organisms that are best suited to survive pass their traits down. Is it true that only the strong survive?
How Concrete Roofs Work
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Concrete roofs are exactly what they sound like: solid slabs of concrete capping the top of homes. How can concrete roofs protect you from big storms?
10 High-tech Tools on the Typical Farm
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The modern farm has more in common with Silicon Valley than you might think. Here are 10 high-tech tools you may find on a farm from HowStuffWorks.
How Reverse Osmosis Works
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How does reverse osmosis work? Find out how a semipermeable membrane can act as a filter for some particles while letting others pass through.
10 Antique Toys That Still Look Like Fun
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Call them outdated or laud them for being 'vintage' but some toys just never go out of style. Learn about some fierce antique toys at HowStuffWorks.
Where Is the Hubble Telescope and How Does It Work?
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The Hubble Space Telescope is one of the most amazing machines in orbit right now. Learn more about the Hubble Space Telescope and how it works.
How Voyager Works
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The Voyager program launched two unmanned probes into space. The Voyager spacecrafts captured amazing images and made incredible scientific discoveries.