Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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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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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
Generalized flower structure.
Lake structure.
The Atmosphere’s Oxygen Came from PhotosyntheticOrganisms