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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
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Uranium – Twisting the Dragon’s Tail

Uranium Does Something Incredible

The uranium atom has the largest naturally occurring nucleus on earth — 92 protons and usually 146 neutrons, so big that it is groaning under the strain. Uranium spits out pieces of itself and, when it does, it no longer has 92 protons. It’s become a completely different element. Uranium does this all by itself, spontaneously and naturally.