The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
An 1891 cartoon blames immigrants for the ills of American society: anarchy, socialism, mayhem, and
Vocabulary Development in English Monolinguals (EL1) and English Language Learners (ELL)
Elizabeth, a married 35-year-old woman, always thought that she followed a sensible diet
Estimating Potential Blood Volume Loss (Part 2)
Mishu wants to invest an inheritance of $20,000 for one year. His credit union offers 8.85% for ...