North American Gold

Clip: Season 42 Episode 22 | 2m 28s

When the Earth formed, most of the gold sunk to its core—but some remained trapped inside Earth’s mantle.

Aired: 05/23/18

Rating: NR

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National corporate funding for NOVA is provided by <a href="" target=_blank">Draper</a>. Major funding for NOVA is provided by the David H. Koch Fund for Science, the <a href="" target="_blank">Corporation for ...