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Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.