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American science after colonization

By |2018-04-08T11:21:58+00:00September 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 electricity? Physics

By |2018-06-01T10:27:39+00:00August 16th, 2017|Physics|

What is electricity? A bolt of lightning in the sky What is electricity made of? Everything in the universe is made of atoms.  Those atoms are made of electricity. Atoms are made of even smaller particles called protons, neutrons, and electrons. Electricity is electrons that have gotten loose from their atom. (More about electrons) The protons and neutrons [...]

Pearl Diving – History of Pearls

By |2018-04-08T11:21:51+00:00June 8th, 2017|Clothing|

A pearl inside an oyster Very early in human history, maybe around 100,000 years ago, many people lived along the coasts of Africa and lived mainly on seafood - seaweed, fish, clams, mussels, and oysters. This gave people a very easy, reliable (and delicious) food source. A mother-of-pearl necklace from Ancient Egypt(ca. [...]

What is plastic? Organic chemistry

By |2018-04-08T11:21:49+00:00June 2nd, 2017|History|

Plastic water bottles There are thousands of different kinds of plastic, from shopping bags to Fisher-Price toys to photographic film, CD's, and plumbing pipes. Some plastics, like chewing gum or rubber, grow as part of plants, but people make most of the different kinds of plastic. We call them "plastics" because they are [...]