At what age, on average, is a human most fertile? Is it different for men and women? What can this tell us about the structure of ancient cultures? - Quora

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How has China retained a high population from ancient China? - Quora

Some ancient Roman and Greek statues portray men as extremely fit with physiques that can be hard to obtain even today. Were such physiques common, or even attainable back then? - Quora

At what time of the month is a woman fertile? - Quora

How does a woman's fertility vary with age? - Quora

Why are there more men than women in China? - Quora

What historical event do you think will repeat itself or have already been repeated multiple times and might be repeated again? - Quora

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Why are there more male scientists than female scientists? - Quora

Did people in ancient times have higher beauty standards than today? - Quora

Natufian culture - Wikipedia

Why were women not allowed to serve as soldiers in the ancient Greek and Roman armies? - Quora

Which was/is the most fascinating civilization? - Quora