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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Feeding groove and phagocytosis displayed by many species of supergroup Excavata. Feeding groove and phagocytosis displayed by many species of supergroup Excavata.
Approach used to determine the evolutionary relationships among many animal species using molecular Approach used to determine the evolutionary relationships among many animal species using molecular
Resource partitioning among five species of warblers feeding in North American spruce trees. Resource partitioning among five species of warblers feeding in North American spruce trees.
Drugs and Human Behavior Drugs and Human Behavior
Inside of the Human Immunodeficiency Virus (HIV) Inside of the Human Immunodeficiency Virus (HIV)
The first pioneer species arrived less than a decade after the eruption. The first pioneer species arrived less than a decade after the eruption.
Video: Acid-base imbalances - respiratory acidosis and alkalosis

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