Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are more bacteria in your mouth than there are people in the world.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.
Oceanic Crust Has a Well-defined Internal Structure
Play in Four Cultures Across cultures, play is the most common activity in early childhood. Source:
A football game, in 1879, pits Yale against Princeton. The field was not lined or bounded, and play
Barbara Kruger, Untitled (We won't play nature to your culture).