In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
Survivorship curve for the North American beaver.
Young American Alligators basking
The major language areas of the left hemisphere of the brain.