21:33
Reactions
Every other video about color is wrong.
The 15 ways that color happens. It's all about the electrons. Well, almost.
Why is the US buying Canada's trash for $30,000 per gram?
Reactions is a show that uncovers the chemistry all around us. We answer the burning questions you’ve always wanted to ask, blending the worlds of science and every-day life.
Why is the US buying Canada's trash for $30,000 per gram?
Season 10 Episode 12 | 12m 7s | CC
Companies around the world are fighting to buy a rare radioactive substance, despite its $30,000-per-gram price tag. This substance powers emergency exit signs that can stay bright for two decades without power, glow-in-the-dark keychains, and might one day unlock the holy grail of clean energy. What is this mystery substance?
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