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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
![The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_29_07_20601601.jpeg)
![Cylinder 1 slit signals the computer the piston position for cylinder 1. The 1-degree slits provide ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_6_25_28_298112223.png)