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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.