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Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.