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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
There are 60,000 miles of blood vessels in every adult human.
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.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.