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Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Traditional animal phylogeny based on body plans. Traditional animal phylogeny based on body plans.
McBurney’s point is the common location of pain in children and adolescents with appendicitis. McBurney’s point is the common location of pain in children and adolescents with appendicitis.
American Children with Working Parents American Children with Working Parents
By age 3, children develop scripts for common events such as eating at a restaurant. By age 3, children develop scripts for common events such as eating at a restaurant.
Complementary and Alternative Therapy Use Among Adults and Children Complementary and Alternative Therapy Use Among Adults and Children
Blood pressure cuffs are available in various types and sizes for infants and children Blood pressure cuffs are available in various types and sizes for infants and children
Video: Genetic distance between human groups

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