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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.