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Did you know?

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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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

NASA Spacecraft Spot Something New On the Sun NASA Spacecraft Spot Something New On the Sun
Female leopard in the Sabi Sands area of South Africa. Note the white spot on its tail, used for com Female leopard in the Sabi Sands area of South Africa. Note the white spot on its tail, used for com
Pustule Pustule
Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ... Common skin signs are often evidence of an illness or disorder. A macule is a discolored spot on the ...
Can you spot the camouflaged animal? Can you spot the camouflaged animal?
Video: The Nerve Impulse

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