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Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
The horizontal fraction bar was introduced by the Arabs.