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Athletes who use banned drugs get a unfair advantage. But how do officials know which athletes are cheating and which ones are “clean”? With chemistry, of course!

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Has your fresh juicy apple been replaced by an unsightly brown fruit? A special compound called polyphenol oxidase (PPO) is behind the transformation.

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Anthrax is one of the most common weapons used in biological attacks. Anthrax spores can be transported and spread under conditions that would kill other biological agents.

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Some species have a bigger impact on their ecosystem than others. These keystone species include predators, prey, plants, and ecosystem engineers.

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Most people depend on sight more than any other sense to interact with the world. But millions of people worldwide are either blind or have impaired vision. Fortunately, modern medicine is finding ways to improve and even restore sight!

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Animal agriculture is a big source of methane emissions. That’s right—this powerful greenhouse gas is being produced by cows!

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Mosquitoes are known as disease vectors because they can carry diseases from one animal to another. That includes spreading disease between humans and from animals to humans.

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The butchers of the future will sell meat that have never been part of a living animal. Instead, meat will be made from cultured cells. In other words, it will be grown outside the body, instead of on an animal.

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Babies born by Cesarean section miss out on good bacteria that vaginally-delivered babies get from their mothers. This can have long-term consequences on health, including on the development of allergies and asthma.

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There are all kinds of reasons why students like you might not get enough sleep. But did you know that getting a good night’s rest is important for memory, learning, and health.

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