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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?
It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
Did you know?
Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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If you could remove all of your skin, it would weigh up to 5 pounds.
![Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b](https://biology-forums.com/gallery/47/medium_374628_15_08_15_11_50_50_222302203.jpeg)
![During World War I, advancing armies unloosed ferocious artillery barrages to destroy deeply entrenc](https://biology-forums.com/gallery/47/medium_4_23_06_16_8_40_59_235972013.jpeg)