Swiss naturalist and physician Philippus Theophrastus Aureolus Bombastus von Hohenheim - better known as Paracelsus -was among the first naturalists to study how the fumes, dust and ash found in a ...
Discover how rocks, minerals & the rock cycle change your world. Join the Science Trek team to explore rocks and minerals! Discover how the Earth formed, the three types of rocks, the rock cycle, and ...
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