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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Recombinant Frequencies Recombinant Frequencies
The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima
IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br
Stethoscope with both a bell-shaped and flat-disc amplifier Stethoscope with both a bell-shaped and flat-disc amplifier
Close-up of a flat-disc amplifier (left) and a bell amplifier (right) Close-up of a flat-disc amplifier (left) and a bell amplifier (right)
Calculating genotype frequencies from allele frequencies Calculating genotype frequencies from allele frequencies
Video: Brain Anatomy Animation (Part 2 of 2)

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