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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 Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
![Mother giraffe and calves feeding. It is mostly the females that raise young, and they may gather in](https://biology-forums.com/gallery/47/medium_27689_23_04_12_3_24_46.jpeg)
![Functional MRI Scans These scans of human brains show localized average increases in neural activity](https://biology-forums.com/gallery/47/medium_6_31_03_15_7_18_49_211892310.jpeg)