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The Matter of Life
Is the composition of living things similar to that of their surroundings? And why aren’t we made mostly of metals?
April 1, 2020 זמן קריאה משוער 4 -
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The Periodic Table’s Precious Metals
Beyond gold: Some metals cost tens of thousands of dollars per kilogram, and radioactive elements fetch even more.
April 1, 2020 זמן קריאה משוער 9