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Roman kitchens – houses in ancient Rome

By |2018-04-24T23:37:49+00:00August 27th, 2017|Architecture, Romans|

Roman cooking braziers - Picture thanks to VROMA Poor Romans in the countryside most often lived with their whole family in one room of a small apartment building. So they didn't have a separate kitchen. Instead, they cooked over a small fire or on a charcoal brazier, either in the courtyard or in their room (if [...]

Baths of Caracalla – Roman architecture

By |2018-04-24T23:29:11+00:00August 25th, 2017|Architecture, Romans|

Baths of Caracalla Roman emperors often built huge public bath buildings for the people of Rome to enjoy. The largest one, and one that also happens to be very well preserved so we can still see it today, was the one built by the Emperor Caracalla, about 200 AD. When you first came in, you went into a big [...]

Early Native American science and inventions – History of Science – North America

By |2018-04-24T08:21:21+00:00August 10th, 2017|Native American, Science|

Native American science: Sunflowers growing in a field Domesticating sunflowers Probably the greatest contribution of Native American people to science before 1500 AD was the domestication of several plants, especially sunflowers in eastern North America. These plants were very useful to them. And now they are useful to the people of the whole world. Farmers had to work on this [...]

History of Indian medicine

By |2018-09-27T12:21:49+00:00July 22nd, 2017|India, Science|

Indian medicine: the Atharva Veda manuscript: an Indian medical book Early Indian medicine Medicine got an early start in India. Even in the Stone Age, about 5000 BC, dentists at Mehrgahr were drilling people's teeth. They tried to fix people's cavities. That's in the Indus River Valley (now in Pakistan). Where is Mehrgahr? History of medicine The [...]

What is charcoal? History of Science

By |2018-09-27T04:40:55+00:00June 20th, 2017|Art, Science|

Charcoal history Why use charcoal? Charcoal is a certain kind of half-burnt wood. People use charcoal for fires because it burns hotter and cleaner than wood (less smoky), and more slowly. Your house or workplace stays cleaner. You need charcoal to melt copper and tin ore to make bronze, too. More about combustion [...]

Doctors and medicine in ancient Egypt

By |2018-10-18T10:29:46+00:00June 19th, 2017|Africa, Egypt, Science|

Ancient Egyptian medicine: Egyptian boys being circumcised, from the tomb of the Vizier Ankhmahor and his wife Mereruka Sixth Dynasty (Old Kingdom, ca. 2300 BC) Best doctors in the Western world Throughout all of antiquity, from the Stone Age to the Islamic period, the doctors of Egypt were the best in the Western [...]

History of Gunpowder: Gunpowder in ancient China

By |2018-10-02T09:40:12+00:00June 7th, 2017|China, Science, War|

History of gunpowder: Fireworks Who invented gunpowder? Like the idea of zero, gunpowder developed gradually over time. In 142 AD, during the Han Dynasty, a man named Wei Boyang was the first to write anything about gunpowder. He wrote about a mixture of three powders that would "fly and dance" violently. We aren't [...]

What is carbon? Atoms – Chemistry

By |2018-04-08T11:21:48+00:00June 1st, 2017|Biology, Chemistry|

Diagram of a carbon atom When a star has changed all of the hydrogen atoms into helium, it begins to convert the helium atoms into carbon atoms and oxygen atoms. All of the carbon in the universe was made inside stars. Carbon atoms are heavier than helium or hydrogen, because they have six [...]