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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
The longest a person has survived after a heart transplant is 24 years.
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).
![Species, subspecies, populations, and individuals. Species are reproductively isolated from one anot](https://biology-forums.com/gallery/47/medium_274247_21_01_15_7_40_14_202762058.jpeg)
![Although average brain size increases gradually though time in H. erectus, individuals with small br](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_53_207641723.jpeg)