|
|
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
Did you know?
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.