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Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.