Roland Piquepaille writes "In its April issue, Wired Magazine argues that we need a second Moore's law, this time about overall efficiencies of our computers and other electronic devices. The subtitle of the article summarizes it: "If we don't do something about increasing battery life, we're toast." Michael S. Malone, the author, says that the first Moore's law is endangered, not because the semiconductor industry cannot build new generation of chips, but because we will not be able to provide them with enough power. And he contends that the problem arises from the fact that we are using more and more wireless devices, which obviously are not connected to a plug. This overview contains selected excerpts of this eye-opening article."