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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

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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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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Deserts differ across the world. (a) Acacia trees between a gravel plain and sand dunes in the Namib Deserts differ across the world. (a) Acacia trees between a gravel plain and sand dunes in the Namib
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Temperature conversion Temperature conversion
Amino acid conversion to the corresponding a-keto acid by transamination or oxidative deamination Amino acid conversion to the corresponding a-keto acid by transamination or oxidative deamination
Conversion of guanine to 6-ethylguanine by the alkylating agent ethylmethane sulfonate (EMS) Conversion of guanine to 6-ethylguanine by the alkylating agent ethylmethane sulfonate (EMS)
kcal/g to KJ/g conversion kcal/g to KJ/g conversion
Video: Factors that increase metabolic rate and heat production

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