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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
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?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.