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We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow. Jeffrey Siegel illustrates how a good mix of sleep, nutrition and exercise keep your muscles as big and strong as possible. [Directed by Brett Underhill, narrated by Addison Anderson].

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Fatima AlZahra'a Alatraktchi: To detect diseases earlier, let's speak bacteria's secret language

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Bacteria "talk" to each other, sending chemical information to coordinate attacks. What if we could listen to what they were saying? Nanophysicist Fatima AlZahra'a Alatraktchi invented a tool to spy on bacterial chatter and translate their secret communication into human language. Her work could pave the way for early diagnosis of disease -- before we even get sick.

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Id like to know more about anatomy on a chemical level.

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Here is a cool video on Homeosatsis......does it help?

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Here is a cool video on Homeosatsis......does it help?

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Homeostasis (video) | Feedback | Khan Academy

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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What have you learnt so far that will help you professionally? 

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What have you learnt so far that will help you professionally? 