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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.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.