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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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The average adult has about 21 square feet of skin.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Body size and population density of herbivorous mammals
Natural capital degradation
Evolution of Density
Oil and Natural Gas Transportation
Low (or No) Natural Growth
The impact of climate change on natural ecosystems