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There are 60,000 miles of blood vessels in every adult human.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Malpresentation of fraternal twins. Malpresentation of fraternal twins.
Fossil remains of anatomically modern humans from the Czech Republic and from China (center crania) Fossil remains of anatomically modern humans from the Czech Republic and from China (center crania)
Cortical Gray Matter in Monozygotic Twins Discordant for Schizophrenia Cortical Gray Matter in Monozygotic Twins Discordant for Schizophrenia
When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ... When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ...
#38.Genetically identical organisms derived from a single genetic source are #39 #38.Genetically identical organisms derived from a single genetic source are #39
Identical twins (monozygotic twins) have the same sex and share a single genotype. Identical twins (monozygotic twins) have the same sex and share a single genotype.
Video: Blood Flow Through the Kidneys

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