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Did you know?
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.