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Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.