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Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.