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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
![Pancreatitis. Inflammation of the pancreas may be the result of a bacterial infection, trauma, or ch](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_35_06_93862089.jpeg)
![The monthly changes of angle between the direction of illumination by the Sun and viewing from Earth](https://biology-forums.com/gallery/47/medium_12359_23_01_13_7_07_24.jpeg)