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Did you know?

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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Cambrian trilobite, with a shell made of calcium carbonate. Cambrian trilobite, with a shell made of calcium carbonate.
Pure Word Deafness Pure Word Deafness
Seriation features operations of comparing the length of each stick to the other sticks and putting ... Seriation features operations of comparing the length of each stick to the other sticks and putting ...
Comparing Signs and Symptoms of Cold, Allergy, and the Flu Comparing Signs and Symptoms of Cold, Allergy, and the Flu
Identification of the numbers in the Word Problem Identification of the numbers in the Word Problem
Phylogenetic tree constructed by comparing homologies in cytochrome c amino acid sequences Phylogenetic tree constructed by comparing homologies in cytochrome c amino acid sequences
Video: The Krebs Cycle Animation

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