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health.howstuffworks.com | ||
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science.howstuffworks.com
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| | | | | The U.S. Air Force is the youngest American military branch, forming in the 20th century after the invention of the airplane. Learn about the history of the Air Force, how it's structured, the process of joining and leaving, and life during time served. | |
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history.howstuffworks.com
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| | | | | Dame Jean Macnamara's research helped lead to the Salk vaccine for polio. Her lasting legacy as an advocate for people with disabilities lives on today. | |
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oyla.us
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| | | | | Learn about Parkinson's disease and its early stages. Discover the history behind the disease and how it is treated. | |
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www.npr.org
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| | | Doctors say the machine that helps some people with sleep apnea keep their airway open at night won't be enough to help an ill COVID-19 patient breathe and could spread the coronavirus to bystanders. | ||
