It has been proposed to solve the energy crisis on earth by exploiting helium-3 on the moon. Helium-3 can be used as fuel in fusion reactors. This proposal is absurd. Even if man can mine helium-3 on the moon, it will be at least 50 years later to build the fusion reactor. It will be too late to solve the energy crisis facing the earth today.
The exploitation of helium-3 on the moon cannot solve the recent energy crisis on earth best summarizes the meaning of the stem.