In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
A family pedigree of a recessive trait.
Environmental influences on the expression of PKU within a single family
he White-throated Bee-eater, Merops albicollis is a near passerine bird in the bee-eater family Mero