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Author Question: Footprints preserved in 3.6 million-year-old volcanic ash at Laetoli, Tanzania, indicate that A. ... (Read 226 times) |
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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.
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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.
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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
Rock layers (strata) usually look like layers in a cake such as these strata at Olduvai Gorge Tanzan