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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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.
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Your heart beats over 36 million times a year.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.