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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The human body produces and destroys 15 million blood cells every second.