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Extremophiles: How Do These Organisms Push the Limits of Life?
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Extremophiles are organisms that live in "extreme" environments. Learn why extremophiles are remarkable, not only because of their habitats.
How a Symbiotic Relationship Works
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Symbiosis can be mutually beneficial, helping two creatures survive in a hostile environment. Learn about the different forms of symbiosis.
10 Weirdest Sources for Antibiotics
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Many lifesaving antibiotics are discovered in some pretty nasty places. Here are the 10 weirdest sources for antibiotics at HowStuffWorks.
How Can Light Kill Viruses?
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Hand sanitizers can only get you so far in preventing a viral infection. Scientists are discovering how visible light can be used to destroy viruses. Learn about the laser technique and what it means for the future.
How Pasteurization Works
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Pasteurization is the process of removing harmful pathogens from various types of food. Learn about the process of pasteurization.
What's the Difference Between Ethyl Alcohol and Isopropyl Alcohol?
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The two different types of alcohol are commonly used in hand sanitizer today. But does one work better than the other?
What's a beer battery?
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A beer battery uses a brewery's waste water to generate electricity. Learn how a beer battery works and about microbial fuel cells.
Saharan Dust: The Good, the Bad and the Gritty
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Dust from the Sahara makes its way around the world with both positive and not-so-positive consequences.
Are Plastic-eating Enzymes Our Planet's Only Hope?
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Two bacterial enzymes degrade PET plastics and could potentially be a solution to Earth's massive waste problem. HowStuffWorks looks at the science.
How Biological and Chemical Warfare Works
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Chemical warfare and biological warfare is explained in this article. Learn about biological and chemical warfare.