This metal offers thousands of years of nuclear energy, but is it any safer than uranium? Read more
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Thorium (Th)
This metal offers thousands of years of nuclear energy, but is it any safer than uranium?
Gold (Au)
Why do we value this useless metal? And does it bring out the worst in human nature?
Obscure Elements
In the final programme in the series we look at the rarest members of the periodic table.
