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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?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
Did you know?
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.