Discusses early inventions, such as calculating devices, machines using gears, steam engines, war technology, and town planning. Some mathematicians included are Thales, Pythagoras, Euclid, Archimedes, and Appolonius. Some topical concepts covered are astronomical discoveries, prime numbers, evolution of the species, and measuring the circumference of the earth.

History and FAQs of various calendars, including Julian, Gregorian, Jewish, Islamic, Chinese, and Mayan. Astronomy, years, months, and days of the week.

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