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What Is Caviar? Origins, Types and Production

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Many people consider caviar, unfertilized sturgeon eggs, to be a delicious delicacy. But how exactly is this luxury harvested, and what is the proper way to eat it?

What Is Deforestation?

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Deforestation, or the removal of forests, contributes to global warming. Learn how deforestation harms our plants and animals -- even to extinction.

What Is Delta Force, the Super Secret Military Group?

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Delta Force is the United States' most elite tactical combat group. Learn about Delta Force and the secrecy surrounding the Delta Force team

What Is Dynamite and How Does It Work?

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Alfred Nobel revolutionized several industries with his invention of dynamite. Learn more about how dynamite works and its controversial history.

What Is Déjà Vu?

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Déjà vu is used to describe the feeling that you experienced a situation before. What causes this phenomenon? It's not a glitch in the matrix, but most of our knowledge on the subject is still theoretical.

What Is ESP? How ESP Works

science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm

Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?

What Is Ectoplasm?

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Obviously, if we had more evidence of the existence of ghosts, we wouldn't all spend so much time debating the matter. Believers in the supernatural, however, are convinced a substance called "ectoplasm" proves ghosts are real -- but are they right?

What Is Force? Learn About 4 Fundamental Forces of Nature

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Four fundamental forces of nature are behind all that we do, from falling down to orbiting the sun. Learn about the four fundamental forces of nature.

What Is Glycerol? 6 Uses for the Wonder Compound

science.howstuffworks.com/glycerine.htm

From soap to pharmaceutical products, glycerine has many applications.

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