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How Does Herd Immunity Keep a Country Safe From Diseases?
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Herd immunity relies on the principle of safety in numbers as far as vaccinations go. Find out why herd immunity is an important public health issue.
How Nuclear Bombs Work
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Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?
NASA's 10 Greatest Achievements
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NASA's 10 greatest achievements range from technical feats to displays of human ingenuity. Learn about NASA's 10 greatest achievements.
How Day Trading Works
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Day trading is buying and selling securities in the same day. Day traders take advantage of small price shifts. Learn about day trading.
How are crystals made?
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From the Hope diamond to the shiny bits in instant coffee, crystals have always held the power to fascinate us humans. Are they more than just a bunch of pretty facets?
How Space Farming Works
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Space farming is the process of cultivating plants in space. Learn why space farming is important and how space farming will affect life on Earth
How Play-Doh Works
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The smell of Play-Doh® modeling compound is instantly recognizable to millions of people. Learn about its history and why it acts the way it does.
How Circuits Work
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Circuits can be found in just about every electronic device you can think of. Find out what circuits are and how circuits make electronic devices work.
How Willpower Works
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Willpower allows us to resist urges and impulses. Learn about willpower in this article.
5 Vehicles That Were Crossover Before There Were Crossovers
Some vehicles were simply ahead of their time, with features from cars and trucks. Read about 5 vehicles that were crossover before there were crossovers.