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Author Question: Kareem is working on a practical problem with his 16-year-old son, Josh, and his 8-year-old ... (Read 249 times) |
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).