The familiar sounds of your heart are made by the heart's valves as they open and close.
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Excessive alcohol use costs the country approximately $235 billion every year.
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There are more bacteria in your mouth than there are people in the world.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
A hypothetical model of the process of cell-wall expansion.
Soil profile exposed in a boreal forest site, showing LFH, A, B, and C horizons.
Ovulation process
taste process
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...