It is well-known that every coin has two sides. For many precious resources we are using now, the same theory applies. We named them Coin Chemicals (CC). On the one hand, CC act as vital materials and show a great side; on the other hand, they become dangerous evil to the environment once the improper emission or leakage happens.
For instance, typical chemicals like Hg, Cd, Pb and cyanide play a irreplaceable role in industrial community.
P, N and organic fertilizer are very useful resource in agriculture.
what’s more, U and Pu can provide human beings with clean nuclear energy.