The human body produces and destroys 15 million blood cells every second.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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There are 20 feet of blood vessels in each square inch of human skin.
A Memory Task for Intelligence Testing
(A) Thumb slide down nose to (B) St-2. Press points along the cheekbone: (C) LI-20, (D) St-3, (E) ...
How to integrate trigonometric functions containing sine and cosine with odd powers (Part 1)