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American science after colonization

By |2018-04-08T11:21:58-07:00September 28th, 2017|Americas, Native American, North America, Science|

European trade goods (thanks to Nebraska Game and Parks Division) North American people made rapid scientific advances in the course of the 1500s AD, inspired by contacts with traders and explorers from Europe. People learned how to tame horses and ride them, and they learned how to use guns. They also began to use a [...]

What is tuberculosis? History of diseases

By |2019-04-03T13:26:04-07:00September 7th, 2017|Science, West Asia|

A child with tuberculosis What is tuberculosis? Tuberculosis is a lung disease caused by germs. Today we can usually cure it with antibiotics. But in antiquity there was no cure. Many people died of tuberculosis. What are germs? What do your lungs do? More about diseases When did tuberculosis get going? One kind of tuberculosis seems [...]

Ancient diseases and doctors – History of medicine

By |2019-05-13T10:53:35-07:00September 6th, 2017|Egypt, Science|

Greek doctor letting blood out of a patient because he believes in the four humors: history of medicine How did ancient doctors treat diseases? Ancient doctors tried to cure everyone who was sick, but they did better with some diseases than with others. The history of medicine is full of mistakes as well as [...]

What are hydrocarbons? Simple science – Chemistry

By |2017-06-02T08:24:00-07:00June 2nd, 2017|Chemistry|

A model of a methane molecule Hydrocarbons are molecules made out of hydrogen atoms and carbon atoms. Methane is the simplest hydrocarbon molecule: just one carbon atom with four hydrogen atoms stuck to it. Because both carbon and hydrogen were common in nebulae, hydrocarbon molecules are very common in space. Many of these molecules [...]