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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
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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Thyroid conditions may make getting pregnant impossible.
Did you know?
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.