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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The horizontal fraction bar was introduced by the Arabs.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
![(a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D](https://biology-forums.com/gallery/47/medium_273287_22_02_15_10_29_18_208031613.jpeg)
![A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_27_03_22389406.jpeg)