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History of the human body – doctors and science

By |2018-04-25T17:08:36+00:00September 6th, 2017|Science|

Ebers Papyrus, one of the oldest known medical texts. From Egypt, about 1550 BC Doctors have been trying to figure out how the human body works since the Stone Age, and there are still many things we don't know about the human body even today. Medical researchers all over the world have contributed bits [...]

What is jade? Metamorphic rock

By |2018-04-21T12:09:20+00:00June 26th, 2017|History|

What is jade? Jade rock from Alaska Jadeite and nephrite Jade is really two kinds of metamorphic rock, jadeite and nephrite, that look pretty much exactly the same. Scientists can tell them apart using chemical tests and x-rays. Like quartz, both jadeite and nephrite are chains of silicon and oxygen atoms. Why is [...]