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av Mike Guidry |
av Alexander von Humboldt |
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Einstein's general theory of relativity is widely considered to be one of the most elegant and successful scientific theories ever developed, and it is increasingly being taught…
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Polymath Alexander von Humboldt (1769-1859), a self-described 'scientific traveller', was one of the most respected scientists of his time. Humboldt's wanderlust led him across …
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