More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.
Asian elephant
Eye of an Asian elephant.
Skin of an African (left) and Asian (right) elephant.
The recently discovered lleret calvaria from Kenya is the smallest H. erectus and shares many traits