The result was that the nail could attract little bits of iron on a table thanks to the magnetic field.

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Not so long ago most products were produced using a handful of atoms from the periodic table, like copper, iron, nickel, and aluminum.

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The reaction between hydrogen atoms to make helium has the biggest yield, but subsequent mergers all the way up to iron (number 26 on the periodic table) will release some energy.

ECONOMIST: Sir Fred Hoyle

The model begins with an input-output table, which says that, for example, the steel mill industry uses the output of the iron ore industry, the electric utility industry, as well as labor and some lesser inputs.

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