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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Did you know?
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.