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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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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.