Season
- Season 1 1993-12-10
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- Season 22 2021-11-28
- Season 23 2022-02-16
Season 23 Episode
- Season 13 Episode 1
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Modern Marvels - Season 13 Episode 18 Heavy Metals
8.00 44 minutes They are elements that occupy a select portion of the periodic table and are so essential to America's economic and military might that they are stored in the National Defense Stockpile in case of all-out war. We plan a riveting visit. Some of the vital heavy metals that we survey include copper, uranium, lead, zinc, and nickel. We also take a look at superalloys--consisting of steel combined with chromium, cobalt, and dozens of other heavy metals--that resist corrosion and perform increasingly elaborate functions. From Earth to space, from cosmetics to vitamins, in a million different ways, heavy metals are here to stay!
