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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Vaccines prevent between 2.5 and 4 million deaths every year.
Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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