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Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.