Black Nitrogen - Periodic Table of Videos
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14:35
Hafnium - Periodic Table of Videos
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34:49
People said this experiment was impossible, so I tried it - Thermite Part 1
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22:43
Tungsten (new) - Periodic Table of Videos
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13:50
Why Does Everything Decay Into Lead
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17:19
Cómo tu cerebro elige qué recordar
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52:35
Sierra Nevada und Tabernas-Wüste | Die Winzlinge in freier Wildbahn | ARTE Family
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22:09
Californium - Periodic Table of Videos
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12:37